Definition of precipitate in English:

precipitate

verb prɪˈsɪpɪteɪtprəˈsɪpəˌteɪt

[with object]

1Cause (an event or situation, typically one that is undesirable) to happen suddenly, unexpectedly, or prematurely.
使（事件、情况，尤指坏事或讨厌之事）突如其来地发生，促成
the incident precipitated a political crisis
该事件促发了一场政治危机。
Example sentencesExamples
- How's that been and what precipitated the move?
- The third of these voyages precipitated a series of clashes with Spanish forces, sometimes authorized by London and sometimes not, as the English battled for trade and gold.
- He said: ‘It appears that the death was precipitated by these stressful events which caused him to collapse.’
- Sicily suffered a series of agricultural crises, which precipitated a sharp drop in the grain and citrus markets.
- I kept the correspondence but I thought it has been destroyed in the apartment fire that precipitated my move to the condo.
- Over the years, these works have precipitated some of the most moving moments in the class.
- This was known as the ‘Cloudbuster’ device, and it was sold to several US state governments to precipitate rain.
- The move was precipitated by a slowdown in the housing market in the company's traditional north-east of Scotland heartland, which has been blighted by uncertainty in the oil industry.
- Unless the councillors who precipitated this unwise move are to be surcharged, and I doubt this will be the case, the rate-payers will be expected to foot the bill for the separation.
- Retail trade fell, precipitating a drop in wages and retrenchments.
- Two events had precipitated this change in course.
- Loss of public confidence underlay the financial and political crisis which precipitated the downfall of a system of government too little changed in its habits and priorities since the days of Louis XIV.
- Aggressors in the past, relying on our apparent lack of military force, have unwisely precipitated war.
- Will our relationship pass the test or will the new situation precipitate a change for the worse?
- The move has been precipitated by concerns that a general election could be held in a matter of months.
- After the mutiny of April 1944, which precipitated a confrontation with British forces, much of it was interned.
- Nine years later, it was forced to retreat, precipitating the collapse of the Soviet Union.
- We had jokingly warned the audience that earlier public airings of the song (and even, on occasion, just singing it in the lounge room at home) had precipitated unanticipated falls of rain.
- His move to Ayrshire was precipitated by a failed six-week strike in the Lanarkshire coalfield in 1880.
- This immediately precipitated resumption of the civil war with disillusioned southern forces now certain that the north had no intention of constructing a secular democratic state.
Synonyms
bring about, bring on, cause, lead to, occasion, give rise to, trigger, spark, touch off, provoke, hasten, accelerate, expedite, speed up, advance, quicken, push forward, further, instigate, induce
1. 1.1with object and adverbial of direction Cause to move suddenly and with force.
  使突然移动
  suddenly the ladder broke, precipitating them down into a heap
  梯子突然断裂，让他们摔作一团。
  Example sentencesExamples
  A light step was heard crossing the floor, as if from the bed to the window; and almost at the same instant the door gave way, and, yielding to the pressure of the external applicants, nearly precipitated them into the room.
  The aging, untended planks, however, crumbled under their surging weight and broke away with a palpable snap, precipitating the struggling pair like so many sacks of sand to the lower level.
  Synonyms
  hurl, catapult, throw, plunge, launch, project, fling, cast, heave, propel
2. 1.2precipitate someone/something into Send someone or something suddenly into a particular state or condition.
  使（人，物）突然陷入（某种状态）
  they were precipitated into a conflict for which they were quite unprepared
  他们陷入了一场不期而来的冲突。
  Example sentencesExamples
  Shipwrecks are a constant in this tale, being the main means of precipitating Pericles into his various adventures, like an especially unlucky Odysseus.
  It was his advice, too, which partly helped indirectly to precipitate me into my present much happier situation.
  Garbed as they were, admission was refused, which, it is said, precipitated them into forming a founding nucleus to take in other rural dwellers who had suffered similar indignities.
  The criminal would mount the scaffold and stand upon this trapdoor, which would then open, precipitating the person into a fall of some feet.
  Such actions might even precipitate us into another ice age, and, as history illustrates, cold periods are normally worse than warm, both for humans and for wildlife.
2Chemistry
Cause (a substance) to be deposited in solid form from a solution.
〔化〕使（物质）沉淀；使淀析
cell proteins were then precipitated and washed in 10% trichloroacetic acid
Example sentencesExamples
- The process involves dissolving the black drugs in water, and adding ammonium hydroxide to precipitate the drugs present in the mixture.
- There are also some concerns about the use of sodium bicarbonate, because it may worsen hypocalcemia or precipitate calcium phosphate deposition on various tissues.
- It is then mixed with ammonia to precipitate solid uranium oxide that is of a purer grade.
- For example, the organic compound phenanthrene can be precipitated from an ethanolic solution by the addition of water.
- When substances are precipitated by inorganic or organic processes the material is known as chemical sediment.
1. 2.1 Cause (drops of moisture or particles of dust) to be deposited from the atmosphere or from a vapour or suspension.
  使（水滴，粉尘）沉降
  excess moisture is precipitated as rain, fog, mist, or dew
  Example sentencesExamples
  These will subsequently be precipitated, but as relatively fine particles.
  They discovered that sulfur dioxide in the atmosphere allows clouds to precipitate rain in smaller particles.
  Oxides of sulfur and nitrogen react with water vapor in the atmosphere and then are precipitated out as acid rain.
  When that vapour is precipitated as rain it carries the acidity with it.
  This air cools significantly to become supersaturated with respect to ice, and some of the moisture precipitates out in the form of ice crystals.
  Synonyms
  liquefy, become liquid, deliquesce, liquidize

adjective prɪˈsɪpɪtətprəˈsɪpədət

1Done, made, or acting suddenly or without careful consideration.
轻率的，贸然的，莽撞的
I must apologize for my staff—their actions were precipitate
我必须代员工道歉——他们的行为是轻率的。
Example sentencesExamples
- In such instances the will and the courage confronted by some great difficulty which it can neither master nor endure, appears in some to recede in precipitate flight, leaving only panic and temporary unreason in its wake.
- We're yet to see why three of the most professional and senior staff in the public service would take such a precipitate action.
- The cracking of an old bough, or the hooting of the owl, was enough to fill me with alarm, and try my strength in a precipitate flight.
- Declaring victory would not only be precipitate but dangerous.
- It is good news that there is a deal, but many questions remain and policyholders should not take precipitate action yet.
- She was astonished that her precipitate escape attempt had met with no difficulties thus far.
- A precipitate marriage legitimized the birth of their first child.
- If it were admitted that you who are dissatisfied hold the right side in the dispute, there still is no single good reason for precipitate action.
- Perhaps more than a handful of those members have come to understand the potential calamity of a precipitate withdrawal.
- While some advisers are recommending that investors take a more sceptical approach if they are faced with changes in their fund management company, others caution that it would be wrong to take precipitate action.
- It said the dossier published by the Government on Monday ‘does not constitute evidence of immediate threat and therefore is not a justification for precipitate military action’.
- He was a mediocre speaker, uncomfortable in circumstances of political manoeuvre, often either too hesitant or too precipitate in action, and wedded to a proud independence that interfered with the building of successful alliances.
- But most borrowers will lose substantially by taking this kind of precipitate action.
- It was decided by those present that the Agency must get a message to him warning him against precipitate action.
- His precipitate departure may yet snuff out such modest hopes, however, and leave the Tories as far away from office as they were in 2001.
- More generally, they regarded him as unsympathetic to popular aspirations and intent on imposing a restrictive arrangement with precipitate haste.
- Here are corals that have gone with the flow for 200 million years, and now they're facing the precipitate exodus of their business partners, the zooxanthellae.
- But she certainly stirred a mob reaction in populist manner on an issue that needs sensitive and informed leadership and serious democratic debate, careful and caring thought, not instinctive and precipitate action.
- The bizarre timing was a clear indication that the security services and the police had decided to take precipitate action.
Synonyms
hasty, overhasty, rash, hurried, rushed
impetuous, impulsive, spur-of-the-moment, precipitous, incautious, imprudent, injudicious, ill-advised, heedless, reckless, hare-brained, foolhardy
informal harum-scarum, previous
rare temerarious
1. 1.1 Occurring suddenly or abruptly.
  （事件，情况）突如其来的，突然的
  a precipitate decline in Labour fortunes
  工党的机会的陡然下降。
  Example sentencesExamples
  The final Confederate collapse was precipitate.
  It may be that the precipitate fall in the last survey - widely regarded in both the radio and advertising industries as a glitch - is no fluke.
  The modest fall-off which ensued was followed by a more precipitate decline in World War I, the result of a cut in mine production occasioned by labour shortages.
  Real wages increased only slowly, probably not sufficiently to counter the precipitate decline of the handwork trades and the high marginal costs of urban life.
  Synonyms
  sudden, rapid, swift, abrupt, meteoric, headlong, speedy, quick, fast, hurried, breakneck, violent, unexpected, without warning, unanticipated, unforeseen
  sudden, rapid, swift, abrupt, meteoric, headlong, speedy, quick, fast, hurried, breakneck, violent, precipitous, unexpected, without warning, unanticipated, unforeseen

noun prɪˈsɪpɪteɪtprɪˈsɪpɪtət

Chemistry

A substance precipitated from a solution.
〔化〕沉淀物
Example sentencesExamples
- In the cerium precipitates form needle-like crystals.
- If positive, the nutrients bind with the soil and become unavailable - an insoluble precipitate.
- Here they can form precipitates that can be carried many kilometres by bottom currents.
- However, they do not form extensive precipitates on the bacterial surface.
- Any silver ions present form a white precipitate (silver chloride).

Derivatives

precipitable

adjective prɪˈsɪpɪtəb(ə)lprəˈsɪpədəb(ə)l

A group of researchers determined that a precipitable and protease-resistant form of the prion protein could be detected in dialyzed urine.

precipitately

adverb prɪˈsɪpɪtətli

For it would seem that the wily old fox has finally outfoxed himself by falling prey to an inherent weakness that involves opening his mouth precipitately.
Example sentencesExamples
- The hyper-modernism of retro fashions following so precipitately on their originals allows no space for nostalgia, just as its depthless present can neither articulate nor hear a different future.
- There is a danger that we act precipitately - I don't want to do that.
- He made child's play of its tricky fingerwork and zipped through prestissimi at double-speed, braking precipitately into a sombre adagio.
- But then that is true of tradesmen of all classes who arrive, only partially complete their task and leave precipitately having trousered their wages.

precipitateness

noun

In this sense, the first of Descartes's rules of method in the Discourse is an Academic principle, perhaps the only one: to avoid precipitateness and prejudice and to rely only on the one's own ability to discern the truth.

precipitability

noun prɪˌsɪpɪtəˈbɪlɪti

Origin

Early 16th century: from Latin praecipitat- 'thrown headlong', from the verb praecipitare, from praeceps, praecip(it)- 'headlong', from prae 'before' + caput 'head'. The original sense of the verb was 'hurl down, send violently'; hence 'cause to move rapidly', which gave rise to sense 1 (early 17th century).

Definition of precipitate in US English:

precipitate

verbprəˈsipəˌtātprəˈsɪpəˌteɪt

[with object]

1Cause (an event or situation, typically one that is bad or undesirable) to happen suddenly, unexpectedly, or prematurely.
使（事件、情况，尤指坏事或讨厌之事）突如其来地发生，促成
the incident precipitated a political crisis
该事件促发了一场政治危机。
Example sentencesExamples
- Two events had precipitated this change in course.
- After the mutiny of April 1944, which precipitated a confrontation with British forces, much of it was interned.
- Over the years, these works have precipitated some of the most moving moments in the class.
- His move to Ayrshire was precipitated by a failed six-week strike in the Lanarkshire coalfield in 1880.
- The move was precipitated by a slowdown in the housing market in the company's traditional north-east of Scotland heartland, which has been blighted by uncertainty in the oil industry.
- Retail trade fell, precipitating a drop in wages and retrenchments.
- He said: ‘It appears that the death was precipitated by these stressful events which caused him to collapse.’
- Loss of public confidence underlay the financial and political crisis which precipitated the downfall of a system of government too little changed in its habits and priorities since the days of Louis XIV.
- This immediately precipitated resumption of the civil war with disillusioned southern forces now certain that the north had no intention of constructing a secular democratic state.
- The third of these voyages precipitated a series of clashes with Spanish forces, sometimes authorized by London and sometimes not, as the English battled for trade and gold.
- This was known as the ‘Cloudbuster’ device, and it was sold to several US state governments to precipitate rain.
- Nine years later, it was forced to retreat, precipitating the collapse of the Soviet Union.
- We had jokingly warned the audience that earlier public airings of the song (and even, on occasion, just singing it in the lounge room at home) had precipitated unanticipated falls of rain.
- Unless the councillors who precipitated this unwise move are to be surcharged, and I doubt this will be the case, the rate-payers will be expected to foot the bill for the separation.
- Sicily suffered a series of agricultural crises, which precipitated a sharp drop in the grain and citrus markets.
- I kept the correspondence but I thought it has been destroyed in the apartment fire that precipitated my move to the condo.
- Aggressors in the past, relying on our apparent lack of military force, have unwisely precipitated war.
- How's that been and what precipitated the move?
- Will our relationship pass the test or will the new situation precipitate a change for the worse?
- The move has been precipitated by concerns that a general election could be held in a matter of months.
Synonyms
bring about, bring on, cause, lead to, occasion, give rise to, trigger, spark, touch off, provoke, hasten, accelerate, expedite, speed up, advance, quicken, push forward, further, instigate, induce
1. 1.1 Cause to move suddenly and with force.
  使突然移动
  suddenly the ladder broke, precipitating them down into a heap
  梯子突然断裂，让他们摔作一团。
  Example sentencesExamples
  A light step was heard crossing the floor, as if from the bed to the window; and almost at the same instant the door gave way, and, yielding to the pressure of the external applicants, nearly precipitated them into the room.
  The aging, untended planks, however, crumbled under their surging weight and broke away with a palpable snap, precipitating the struggling pair like so many sacks of sand to the lower level.
  Synonyms
  hurl, catapult, throw, plunge, launch, project, fling, cast, heave, propel
2. 1.2precipitate someone/something into Send someone or something suddenly into a particular state or condition.
  使（人，物）突然陷入（某种状态）
  they were precipitated into a conflict for which they were quite unprepared
  他们陷入了一场不期而来的冲突。
  Example sentencesExamples
  It was his advice, too, which partly helped indirectly to precipitate me into my present much happier situation.
  The criminal would mount the scaffold and stand upon this trapdoor, which would then open, precipitating the person into a fall of some feet.
  Garbed as they were, admission was refused, which, it is said, precipitated them into forming a founding nucleus to take in other rural dwellers who had suffered similar indignities.
  Shipwrecks are a constant in this tale, being the main means of precipitating Pericles into his various adventures, like an especially unlucky Odysseus.
  Such actions might even precipitate us into another ice age, and, as history illustrates, cold periods are normally worse than warm, both for humans and for wildlife.
2Chemistry
Cause (a substance) to be deposited in solid form from a solution.
〔化〕使（物质）沉淀；使淀析
Example sentencesExamples
- It is then mixed with ammonia to precipitate solid uranium oxide that is of a purer grade.
- The process involves dissolving the black drugs in water, and adding ammonium hydroxide to precipitate the drugs present in the mixture.
- When substances are precipitated by inorganic or organic processes the material is known as chemical sediment.
- There are also some concerns about the use of sodium bicarbonate, because it may worsen hypocalcemia or precipitate calcium phosphate deposition on various tissues.
- For example, the organic compound phenanthrene can be precipitated from an ethanolic solution by the addition of water.
1. 2.1 Cause (drops of moisture or particles of dust) to be deposited from the atmosphere or from a vapor or suspension.
  使（水滴，粉尘）沉降
  Example sentencesExamples
  These will subsequently be precipitated, but as relatively fine particles.
  Oxides of sulfur and nitrogen react with water vapor in the atmosphere and then are precipitated out as acid rain.
  When that vapour is precipitated as rain it carries the acidity with it.
  This air cools significantly to become supersaturated with respect to ice, and some of the moisture precipitates out in the form of ice crystals.
  They discovered that sulfur dioxide in the atmosphere allows clouds to precipitate rain in smaller particles.
  Synonyms
  liquefy, become liquid, deliquesce, liquidize

adjectiveprəˈsɪpədətprəˈsipədət

1Done, made, or acting suddenly or without careful consideration.
轻率的，贸然的，莽撞的
I must apologize for my staff—their actions were precipitate
我必须代员工道歉——他们的行为是轻率的。
Example sentencesExamples
- It is good news that there is a deal, but many questions remain and policyholders should not take precipitate action yet.
- But most borrowers will lose substantially by taking this kind of precipitate action.
- It was decided by those present that the Agency must get a message to him warning him against precipitate action.
- While some advisers are recommending that investors take a more sceptical approach if they are faced with changes in their fund management company, others caution that it would be wrong to take precipitate action.
- Perhaps more than a handful of those members have come to understand the potential calamity of a precipitate withdrawal.
- She was astonished that her precipitate escape attempt had met with no difficulties thus far.
- The bizarre timing was a clear indication that the security services and the police had decided to take precipitate action.
- It said the dossier published by the Government on Monday ‘does not constitute evidence of immediate threat and therefore is not a justification for precipitate military action’.
- His precipitate departure may yet snuff out such modest hopes, however, and leave the Tories as far away from office as they were in 2001.
- In such instances the will and the courage confronted by some great difficulty which it can neither master nor endure, appears in some to recede in precipitate flight, leaving only panic and temporary unreason in its wake.
- Declaring victory would not only be precipitate but dangerous.
- A precipitate marriage legitimized the birth of their first child.
- He was a mediocre speaker, uncomfortable in circumstances of political manoeuvre, often either too hesitant or too precipitate in action, and wedded to a proud independence that interfered with the building of successful alliances.
- If it were admitted that you who are dissatisfied hold the right side in the dispute, there still is no single good reason for precipitate action.
- We're yet to see why three of the most professional and senior staff in the public service would take such a precipitate action.
- More generally, they regarded him as unsympathetic to popular aspirations and intent on imposing a restrictive arrangement with precipitate haste.
- Here are corals that have gone with the flow for 200 million years, and now they're facing the precipitate exodus of their business partners, the zooxanthellae.
- But she certainly stirred a mob reaction in populist manner on an issue that needs sensitive and informed leadership and serious democratic debate, careful and caring thought, not instinctive and precipitate action.
- The cracking of an old bough, or the hooting of the owl, was enough to fill me with alarm, and try my strength in a precipitate flight.
Synonyms
hasty, overhasty, rash, hurried, rushed
1. 1.1 (of an event or situation) occurring suddenly or abruptly.
  （事件，情况）突如其来的，突然的
  a precipitate decline in cultural literacy
  工党的机会的陡然下降。
  Example sentencesExamples
  Real wages increased only slowly, probably not sufficiently to counter the precipitate decline of the handwork trades and the high marginal costs of urban life.
  It may be that the precipitate fall in the last survey - widely regarded in both the radio and advertising industries as a glitch - is no fluke.
  The final Confederate collapse was precipitate.
  The modest fall-off which ensued was followed by a more precipitate decline in World War I, the result of a cut in mine production occasioned by labour shortages.
  Synonyms
  sudden, rapid, swift, abrupt, meteoric, headlong, speedy, quick, fast, hurried, breakneck, violent, unexpected, without warning, unanticipated, unforeseen
  sudden, rapid, swift, abrupt, meteoric, headlong, speedy, quick, fast, hurried, breakneck, violent, precipitous, unexpected, without warning, unanticipated, unforeseen

nounprəˈsipəˌtāt

Chemistry

A substance precipitated from a solution.
〔化〕沉淀物
Example sentencesExamples
- In the cerium precipitates form needle-like crystals.
- Any silver ions present form a white precipitate (silver chloride).
- If positive, the nutrients bind with the soil and become unavailable - an insoluble precipitate.
- Here they can form precipitates that can be carried many kilometres by bottom currents.
- However, they do not form extensive precipitates on the bacterial surface.

Usage

The adjectives precipitate and precipitous are sometimes confused. Precipitate means ‘sudden, hasty’: a precipitate decision the fugitive's precipitate flight. Precipitous means ‘steep’: the precipitous slope of the mountain a precipitous decline in stock prices

Origin

Early 16th century: from Latin praecipitat- ‘thrown headlong’, from the verb praecipitare, from praeceps, praecip(it)- ‘headlong’, from prae ‘before’ + caput ‘head’. The original sense of the verb was ‘hurl down, send violently’; hence ‘cause to move rapidly’, which gave rise to sense 1 (early 17th century).

单词	precipitate
释义	Definition of precipitate in English: precipitate verb prɪˈsɪpɪteɪtprəˈsɪpəˌteɪt [with object] 1Cause (an event or situation, typically one that is undesirable) to happen suddenly, unexpectedly, or prematurely. 使（事件、情况，尤指坏事或讨厌之事）突如其来地发生，促成 the incident precipitated a political crisis 该事件促发了一场政治危机。 Example sentencesExamples How's that been and what precipitated the move? The third of these voyages precipitated a series of clashes with Spanish forces, sometimes authorized by London and sometimes not, as the English battled for trade and gold. He said: ‘It appears that the death was precipitated by these stressful events which caused him to collapse.’ Sicily suffered a series of agricultural crises, which precipitated a sharp drop in the grain and citrus markets. I kept the correspondence but I thought it has been destroyed in the apartment fire that precipitated my move to the condo. Over the years, these works have precipitated some of the most moving moments in the class. This was known as the ‘Cloudbuster’ device, and it was sold to several US state governments to precipitate rain. The move was precipitated by a slowdown in the housing market in the company's traditional north-east of Scotland heartland, which has been blighted by uncertainty in the oil industry. Unless the councillors who precipitated this unwise move are to be surcharged, and I doubt this will be the case, the rate-payers will be expected to foot the bill for the separation. Retail trade fell, precipitating a drop in wages and retrenchments. Two events had precipitated this change in course. Loss of public confidence underlay the financial and political crisis which precipitated the downfall of a system of government too little changed in its habits and priorities since the days of Louis XIV. Aggressors in the past, relying on our apparent lack of military force, have unwisely precipitated war. Will our relationship pass the test or will the new situation precipitate a change for the worse? The move has been precipitated by concerns that a general election could be held in a matter of months. After the mutiny of April 1944, which precipitated a confrontation with British forces, much of it was interned. Nine years later, it was forced to retreat, precipitating the collapse of the Soviet Union. We had jokingly warned the audience that earlier public airings of the song (and even, on occasion, just singing it in the lounge room at home) had precipitated unanticipated falls of rain. His move to Ayrshire was precipitated by a failed six-week strike in the Lanarkshire coalfield in 1880. This immediately precipitated resumption of the civil war with disillusioned southern forces now certain that the north had no intention of constructing a secular democratic state. Synonyms bring about, bring on, cause, lead to, occasion, give rise to, trigger, spark, touch off, provoke, hasten, accelerate, expedite, speed up, advance, quicken, push forward, further, instigate, induce 1.1with object and adverbial of direction Cause to move suddenly and with force. 使突然移动 suddenly the ladder broke, precipitating them down into a heap 梯子突然断裂，让他们摔作一团。 Example sentencesExamples A light step was heard crossing the floor, as if from the bed to the window; and almost at the same instant the door gave way, and, yielding to the pressure of the external applicants, nearly precipitated them into the room. The aging, untended planks, however, crumbled under their surging weight and broke away with a palpable snap, precipitating the struggling pair like so many sacks of sand to the lower level. Synonyms hurl, catapult, throw, plunge, launch, project, fling, cast, heave, propel 1.2precipitate someone/something into Send someone or something suddenly into a particular state or condition. 使（人，物）突然陷入（某种状态） they were precipitated into a conflict for which they were quite unprepared 他们陷入了一场不期而来的冲突。 Example sentencesExamples Shipwrecks are a constant in this tale, being the main means of precipitating Pericles into his various adventures, like an especially unlucky Odysseus. It was his advice, too, which partly helped indirectly to precipitate me into my present much happier situation. Garbed as they were, admission was refused, which, it is said, precipitated them into forming a founding nucleus to take in other rural dwellers who had suffered similar indignities. The criminal would mount the scaffold and stand upon this trapdoor, which would then open, precipitating the person into a fall of some feet. Such actions might even precipitate us into another ice age, and, as history illustrates, cold periods are normally worse than warm, both for humans and for wildlife. 2Chemistry Cause (a substance) to be deposited in solid form from a solution. 〔化〕使（物质）沉淀；使淀析 cell proteins were then precipitated and washed in 10% trichloroacetic acid Example sentencesExamples The process involves dissolving the black drugs in water, and adding ammonium hydroxide to precipitate the drugs present in the mixture. There are also some concerns about the use of sodium bicarbonate, because it may worsen hypocalcemia or precipitate calcium phosphate deposition on various tissues. It is then mixed with ammonia to precipitate solid uranium oxide that is of a purer grade. For example, the organic compound phenanthrene can be precipitated from an ethanolic solution by the addition of water. When substances are precipitated by inorganic or organic processes the material is known as chemical sediment. 2.1 Cause (drops of moisture or particles of dust) to be deposited from the atmosphere or from a vapour or suspension. 使（水滴，粉尘）沉降 excess moisture is precipitated as rain, fog, mist, or dew Example sentencesExamples These will subsequently be precipitated, but as relatively fine particles. They discovered that sulfur dioxide in the atmosphere allows clouds to precipitate rain in smaller particles. Oxides of sulfur and nitrogen react with water vapor in the atmosphere and then are precipitated out as acid rain. When that vapour is precipitated as rain it carries the acidity with it. This air cools significantly to become supersaturated with respect to ice, and some of the moisture precipitates out in the form of ice crystals. Synonyms liquefy, become liquid, deliquesce, liquidize adjective prɪˈsɪpɪtətprəˈsɪpədət 1Done, made, or acting suddenly or without careful consideration. 轻率的，贸然的，莽撞的 I must apologize for my staff—their actions were precipitate 我必须代员工道歉——他们的行为是轻率的。 Example sentencesExamples In such instances the will and the courage confronted by some great difficulty which it can neither master nor endure, appears in some to recede in precipitate flight, leaving only panic and temporary unreason in its wake. We're yet to see why three of the most professional and senior staff in the public service would take such a precipitate action. The cracking of an old bough, or the hooting of the owl, was enough to fill me with alarm, and try my strength in a precipitate flight. Declaring victory would not only be precipitate but dangerous. It is good news that there is a deal, but many questions remain and policyholders should not take precipitate action yet. She was astonished that her precipitate escape attempt had met with no difficulties thus far. A precipitate marriage legitimized the birth of their first child. If it were admitted that you who are dissatisfied hold the right side in the dispute, there still is no single good reason for precipitate action. Perhaps more than a handful of those members have come to understand the potential calamity of a precipitate withdrawal. While some advisers are recommending that investors take a more sceptical approach if they are faced with changes in their fund management company, others caution that it would be wrong to take precipitate action. It said the dossier published by the Government on Monday ‘does not constitute evidence of immediate threat and therefore is not a justification for precipitate military action’. He was a mediocre speaker, uncomfortable in circumstances of political manoeuvre, often either too hesitant or too precipitate in action, and wedded to a proud independence that interfered with the building of successful alliances. But most borrowers will lose substantially by taking this kind of precipitate action. It was decided by those present that the Agency must get a message to him warning him against precipitate action. His precipitate departure may yet snuff out such modest hopes, however, and leave the Tories as far away from office as they were in 2001. More generally, they regarded him as unsympathetic to popular aspirations and intent on imposing a restrictive arrangement with precipitate haste. Here are corals that have gone with the flow for 200 million years, and now they're facing the precipitate exodus of their business partners, the zooxanthellae. But she certainly stirred a mob reaction in populist manner on an issue that needs sensitive and informed leadership and serious democratic debate, careful and caring thought, not instinctive and precipitate action. The bizarre timing was a clear indication that the security services and the police had decided to take precipitate action. Synonyms hasty, overhasty, rash, hurried, rushed impetuous, impulsive, spur-of-the-moment, precipitous, incautious, imprudent, injudicious, ill-advised, heedless, reckless, hare-brained, foolhardy informal harum-scarum, previous rare temerarious 1.1 Occurring suddenly or abruptly. （事件，情况）突如其来的，突然的 a precipitate decline in Labour fortunes 工党的机会的陡然下降。 Example sentencesExamples The final Confederate collapse was precipitate. It may be that the precipitate fall in the last survey - widely regarded in both the radio and advertising industries as a glitch - is no fluke. The modest fall-off which ensued was followed by a more precipitate decline in World War I, the result of a cut in mine production occasioned by labour shortages. Real wages increased only slowly, probably not sufficiently to counter the precipitate decline of the handwork trades and the high marginal costs of urban life. Synonyms sudden, rapid, swift, abrupt, meteoric, headlong, speedy, quick, fast, hurried, breakneck, violent, unexpected, without warning, unanticipated, unforeseen sudden, rapid, swift, abrupt, meteoric, headlong, speedy, quick, fast, hurried, breakneck, violent, precipitous, unexpected, without warning, unanticipated, unforeseen noun prɪˈsɪpɪteɪtprɪˈsɪpɪtət Chemistry A substance precipitated from a solution. 〔化〕沉淀物 Example sentencesExamples In the cerium precipitates form needle-like crystals. If positive, the nutrients bind with the soil and become unavailable - an insoluble precipitate. Here they can form precipitates that can be carried many kilometres by bottom currents. However, they do not form extensive precipitates on the bacterial surface. Any silver ions present form a white precipitate (silver chloride). Derivatives precipitable adjective prɪˈsɪpɪtəb(ə)lprəˈsɪpədəb(ə)l A group of researchers determined that a precipitable and protease-resistant form of the prion protein could be detected in dialyzed urine. precipitately adverb prɪˈsɪpɪtətli For it would seem that the wily old fox has finally outfoxed himself by falling prey to an inherent weakness that involves opening his mouth precipitately. Example sentencesExamples The hyper-modernism of retro fashions following so precipitately on their originals allows no space for nostalgia, just as its depthless present can neither articulate nor hear a different future. There is a danger that we act precipitately - I don't want to do that. He made child's play of its tricky fingerwork and zipped through prestissimi at double-speed, braking precipitately into a sombre adagio. But then that is true of tradesmen of all classes who arrive, only partially complete their task and leave precipitately having trousered their wages. precipitateness noun In this sense, the first of Descartes's rules of method in the Discourse is an Academic principle, perhaps the only one: to avoid precipitateness and prejudice and to rely only on the one's own ability to discern the truth. precipitability noun prɪˌsɪpɪtəˈbɪlɪti Origin Early 16th century: from Latin praecipitat- 'thrown headlong', from the verb praecipitare, from praeceps, praecip(it)- 'headlong', from prae 'before' + caput 'head'. The original sense of the verb was 'hurl down, send violently'; hence 'cause to move rapidly', which gave rise to sense 1 (early 17th century). Definition of precipitate in US English: precipitate verbprəˈsipəˌtātprəˈsɪpəˌteɪt [with object] 1Cause (an event or situation, typically one that is bad or undesirable) to happen suddenly, unexpectedly, or prematurely. 使（事件、情况，尤指坏事或讨厌之事）突如其来地发生，促成 the incident precipitated a political crisis 该事件促发了一场政治危机。 Example sentencesExamples Two events had precipitated this change in course. After the mutiny of April 1944, which precipitated a confrontation with British forces, much of it was interned. Over the years, these works have precipitated some of the most moving moments in the class. His move to Ayrshire was precipitated by a failed six-week strike in the Lanarkshire coalfield in 1880. The move was precipitated by a slowdown in the housing market in the company's traditional north-east of Scotland heartland, which has been blighted by uncertainty in the oil industry. Retail trade fell, precipitating a drop in wages and retrenchments. He said: ‘It appears that the death was precipitated by these stressful events which caused him to collapse.’ Loss of public confidence underlay the financial and political crisis which precipitated the downfall of a system of government too little changed in its habits and priorities since the days of Louis XIV. This immediately precipitated resumption of the civil war with disillusioned southern forces now certain that the north had no intention of constructing a secular democratic state. The third of these voyages precipitated a series of clashes with Spanish forces, sometimes authorized by London and sometimes not, as the English battled for trade and gold. This was known as the ‘Cloudbuster’ device, and it was sold to several US state governments to precipitate rain. Nine years later, it was forced to retreat, precipitating the collapse of the Soviet Union. We had jokingly warned the audience that earlier public airings of the song (and even, on occasion, just singing it in the lounge room at home) had precipitated unanticipated falls of rain. Unless the councillors who precipitated this unwise move are to be surcharged, and I doubt this will be the case, the rate-payers will be expected to foot the bill for the separation. Sicily suffered a series of agricultural crises, which precipitated a sharp drop in the grain and citrus markets. I kept the correspondence but I thought it has been destroyed in the apartment fire that precipitated my move to the condo. Aggressors in the past, relying on our apparent lack of military force, have unwisely precipitated war. How's that been and what precipitated the move? Will our relationship pass the test or will the new situation precipitate a change for the worse? The move has been precipitated by concerns that a general election could be held in a matter of months. Synonyms bring about, bring on, cause, lead to, occasion, give rise to, trigger, spark, touch off, provoke, hasten, accelerate, expedite, speed up, advance, quicken, push forward, further, instigate, induce 1.1 Cause to move suddenly and with force. 使突然移动 suddenly the ladder broke, precipitating them down into a heap 梯子突然断裂，让他们摔作一团。 Example sentencesExamples A light step was heard crossing the floor, as if from the bed to the window; and almost at the same instant the door gave way, and, yielding to the pressure of the external applicants, nearly precipitated them into the room. The aging, untended planks, however, crumbled under their surging weight and broke away with a palpable snap, precipitating the struggling pair like so many sacks of sand to the lower level. Synonyms hurl, catapult, throw, plunge, launch, project, fling, cast, heave, propel 1.2precipitate someone/something into Send someone or something suddenly into a particular state or condition. 使（人，物）突然陷入（某种状态） they were precipitated into a conflict for which they were quite unprepared 他们陷入了一场不期而来的冲突。 Example sentencesExamples It was his advice, too, which partly helped indirectly to precipitate me into my present much happier situation. The criminal would mount the scaffold and stand upon this trapdoor, which would then open, precipitating the person into a fall of some feet. Garbed as they were, admission was refused, which, it is said, precipitated them into forming a founding nucleus to take in other rural dwellers who had suffered similar indignities. Shipwrecks are a constant in this tale, being the main means of precipitating Pericles into his various adventures, like an especially unlucky Odysseus. Such actions might even precipitate us into another ice age, and, as history illustrates, cold periods are normally worse than warm, both for humans and for wildlife. 2Chemistry Cause (a substance) to be deposited in solid form from a solution. 〔化〕使（物质）沉淀；使淀析 Example sentencesExamples It is then mixed with ammonia to precipitate solid uranium oxide that is of a purer grade. The process involves dissolving the black drugs in water, and adding ammonium hydroxide to precipitate the drugs present in the mixture. When substances are precipitated by inorganic or organic processes the material is known as chemical sediment. There are also some concerns about the use of sodium bicarbonate, because it may worsen hypocalcemia or precipitate calcium phosphate deposition on various tissues. For example, the organic compound phenanthrene can be precipitated from an ethanolic solution by the addition of water. 2.1 Cause (drops of moisture or particles of dust) to be deposited from the atmosphere or from a vapor or suspension. 使（水滴，粉尘）沉降 Example sentencesExamples These will subsequently be precipitated, but as relatively fine particles. Oxides of sulfur and nitrogen react with water vapor in the atmosphere and then are precipitated out as acid rain. When that vapour is precipitated as rain it carries the acidity with it. This air cools significantly to become supersaturated with respect to ice, and some of the moisture precipitates out in the form of ice crystals. They discovered that sulfur dioxide in the atmosphere allows clouds to precipitate rain in smaller particles. Synonyms liquefy, become liquid, deliquesce, liquidize adjectiveprəˈsɪpədətprəˈsipədət 1Done, made, or acting suddenly or without careful consideration. 轻率的，贸然的，莽撞的 I must apologize for my staff—their actions were precipitate 我必须代员工道歉——他们的行为是轻率的。 Example sentencesExamples It is good news that there is a deal, but many questions remain and policyholders should not take precipitate action yet. But most borrowers will lose substantially by taking this kind of precipitate action. It was decided by those present that the Agency must get a message to him warning him against precipitate action. While some advisers are recommending that investors take a more sceptical approach if they are faced with changes in their fund management company, others caution that it would be wrong to take precipitate action. Perhaps more than a handful of those members have come to understand the potential calamity of a precipitate withdrawal. She was astonished that her precipitate escape attempt had met with no difficulties thus far. The bizarre timing was a clear indication that the security services and the police had decided to take precipitate action. It said the dossier published by the Government on Monday ‘does not constitute evidence of immediate threat and therefore is not a justification for precipitate military action’. His precipitate departure may yet snuff out such modest hopes, however, and leave the Tories as far away from office as they were in 2001. In such instances the will and the courage confronted by some great difficulty which it can neither master nor endure, appears in some to recede in precipitate flight, leaving only panic and temporary unreason in its wake. Declaring victory would not only be precipitate but dangerous. A precipitate marriage legitimized the birth of their first child. He was a mediocre speaker, uncomfortable in circumstances of political manoeuvre, often either too hesitant or too precipitate in action, and wedded to a proud independence that interfered with the building of successful alliances. If it were admitted that you who are dissatisfied hold the right side in the dispute, there still is no single good reason for precipitate action. We're yet to see why three of the most professional and senior staff in the public service would take such a precipitate action. More generally, they regarded him as unsympathetic to popular aspirations and intent on imposing a restrictive arrangement with precipitate haste. Here are corals that have gone with the flow for 200 million years, and now they're facing the precipitate exodus of their business partners, the zooxanthellae. But she certainly stirred a mob reaction in populist manner on an issue that needs sensitive and informed leadership and serious democratic debate, careful and caring thought, not instinctive and precipitate action. The cracking of an old bough, or the hooting of the owl, was enough to fill me with alarm, and try my strength in a precipitate flight. Synonyms hasty, overhasty, rash, hurried, rushed 1.1 (of an event or situation) occurring suddenly or abruptly. （事件，情况）突如其来的，突然的 a precipitate decline in cultural literacy 工党的机会的陡然下降。 Example sentencesExamples Real wages increased only slowly, probably not sufficiently to counter the precipitate decline of the handwork trades and the high marginal costs of urban life. It may be that the precipitate fall in the last survey - widely regarded in both the radio and advertising industries as a glitch - is no fluke. The final Confederate collapse was precipitate. The modest fall-off which ensued was followed by a more precipitate decline in World War I, the result of a cut in mine production occasioned by labour shortages. Synonyms sudden, rapid, swift, abrupt, meteoric, headlong, speedy, quick, fast, hurried, breakneck, violent, unexpected, without warning, unanticipated, unforeseen sudden, rapid, swift, abrupt, meteoric, headlong, speedy, quick, fast, hurried, breakneck, violent, precipitous, unexpected, without warning, unanticipated, unforeseen nounprəˈsipəˌtāt Chemistry A substance precipitated from a solution. 〔化〕沉淀物 Example sentencesExamples In the cerium precipitates form needle-like crystals. Any silver ions present form a white precipitate (silver chloride). If positive, the nutrients bind with the soil and become unavailable - an insoluble precipitate. Here they can form precipitates that can be carried many kilometres by bottom currents. However, they do not form extensive precipitates on the bacterial surface. Usage The adjectives precipitate and precipitous are sometimes confused. Precipitate means ‘sudden, hasty’: a precipitate decision the fugitive's precipitate flight. Precipitous means ‘steep’: the precipitous slope of the mountain a precipitous decline in stock prices Origin Early 16th century: from Latin praecipitat- ‘thrown headlong’, from the verb praecipitare, from praeceps, praecip(it)- ‘headlong’, from prae ‘before’ + caput ‘head’. The original sense of the verb was ‘hurl down, send violently’; hence ‘cause to move rapidly’, which gave rise to sense 1 (early 17th century).
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