Definition of inertia in English:

inertia

noun ɪˈnəːʃəɪˈnərʃə

mass noun

1A tendency to do nothing or to remain unchanged.
无为；无变化，惰性
the bureaucratic inertia of the various tiers of government
各级政府的官僚主义惰性。
Example sentencesExamples
- So, giving enough money to councils without dealing with the inherent inertia of management and rampant laziness would be like pouring grain in a bag full of holes.
- It will indicate to the Australian people the absolute determination of this Government to avoid any sense of passivity or any sense of complacency or inertia.
- As you push yourself to overcome inertia, you need to work against the tendency to feel discouraged and hopeless.
- It is an astonishing victory over the forces of government inertia, and Hodge could not resist basking in her moment of glory.
- What are the strengths that enabled him to survive in a country where plotting is endemic and where almost all attempts at change run into the historic forces of inertia, conservatism and suspicion?
- It very well may be a happier year in commodity markets if the facts of last year's short crop overcome continued global economic inertia.
- In short, purposeful and disciplined policy and funding strategies will have to overcome political inertia and resistance.
- So, whereas what was required under a dictatorship was exceptional courage, what citizens in democracies have to do is overcome apathy and inertia.
- Consumer passivity and inertia are the greatest allies of the rapacious banks and other financial institutions.
- Under current policy there is too much latitude for force structure decisions based on personal whim, the prevailing fashion or as default decisions arising out of bureaucratic compromise or inertia.
- But whatever the smart individuals inside these organizations might think, bureaucratic inertia is killing those golden-egg geese.
- Ignorance, fear, inertia, and stubbornness remain to be overcome.
- We prefer to focus on the elusive bureaucrat, the real source of inertia, or lack of it.
- The capital city needs at its helm a person with ideas and energy who can combat the forces of inertia and inefficiency, and who can initiate and manage urgently needed change.
- No individual names, but there is a general mindset and inertia of individuals in the bureaucracy, including in [my] office.
- It's not yet possible to predict whether the political system will completely dissipate away under the forces of inertia, or whether some renewed political structure will emerge from the ether.
- But Arctic Bay residents have received little help and support in advancing their proposal, and their aspirations are now drowning in bureaucratic inertia.
- Delays and adjournments dog the work of the courts, and the consequent administrative inertia can sap the energy and enthusiasm of even the most committed researcher.
- All medical care systems sometimes experience some inertia or resistance to change.
- Do we suffer petrification through continued stasis and inertia or do we trust our inner, creative, inspirational, communal selves and take on the challenge of change?
Synonyms
inactivity, inaction, inactiveness, inertness, passivity, apathy, accidie, malaise, stagnation, dullness, enervation, sluggishness, lethargy, languor, languidness, listlessness, torpor, torpidity, idleness, indolence, laziness, sloth, slothfulness
motionlessness, immobility, lifelessness
French archaic fainéance
rare stasis, otiosity, hebetude
2Physics
A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
〔物理〕惯性。参见MOMENT OF INERTIA
the power required to overcome friction and the inertia of the moving parts
See also moment of inertia
Example sentencesExamples
- Theoretical work from the 1990s suggests a tantalizing connection between inertia and zero-point energy.
- Moment of inertia is a fundamental property in rotational mechanics.
- A better way to measure the mass of a microscopic sample is to quantify the sample's inertia as it is forced into motion.
- Mass can be measured from an object's tendency to resist moving, i.e., its inertia.
- Those laws provided the law of inertia governing motion of atoms in between collisions and laws of impact governing collisions.
- In a sense, physics began with Descartes and the notion of inertia - that blinding flash of insight that the natural state of motion is a constant velocity.
- Electrons possess inertia, so remain at rest or in uniform motion in the same direction unless acted upon by some external force.
- Adding up to six helium atoms drove the molecule's inertia up, they report.
- How fast and in what order remains to be seen, but the direction is a matter of inertia without friction.
- Why does the amount of matter affect the amount of inertia?
- Unlike Galileo, Newton insisted that the law of inertia applied only to motion in a straight line, not circular motion.
1. 2.1with modifier Resistance to change in some other physical property.
  惰性
  the thermal inertia of the oceans will delay the full rise in temperature for a few decades
  海洋的热惰性会在几十年内延迟气温的全面上升。
  Example sentencesExamples
  A projectile is an object that has been launched, shot, hurled, thrown or by other means projected and which continues in motion due to its own inertia.
  If the fuel burns rapidly enough, it is confined by its own inertia and requires no external confinement system.
  Interestingly, the few studies that have explored this issue seem to point to an overwhelmingly large contribution of wing inertia to the total forces that must be generated.
  In intermediate Re ranges, both viscosity and inertia determine the flow patterns.
  Earth's mass, moreover, measures Earth's inertia or sluggishness if we tried to stop or change its movement through space.
  With the force of inertia, the suits continued to float out in space like simple debris.
  A heavy body weight is a disincentive for movement and physical activity, creating ‘movement inertia.’
  Such examples underscore how adaptive nature really is despite biological inertia and how natural selection ‘makes the best of a bad situation’.
  The ship wasn't moving so there was no external inertia to overcome, or I likely would not have been able to make the trip.
  The relatively large mass and thermal inertia of female desert tortoises usually prevents winter activity but facilitates their relaxed homeostasis.
  All that extra weight has inertia, which you have to overcome to turn, so increasing the weight doesn't help at all.
  Soil for the grass over the common room adds to the thermal inertia of the whole.
  By the force of its own inertia, the club flew towards the wall, breaking into pieces.
  Centrifugal ‘force’ is really a function of the inertia of the object being pushed into a circle.
  The dominating force opposing motion therefore arises from viscosity rather than inertia.
  But Earth is very massive compared to the object, so its inertia or resistance to acceleration is much greater.
  Medieval thinkers had not yet mastered the concept of inertia, the tendency for objects to resist any change in their movement.
  By pulling in its legs, the cat can considerably reduce it rotational inertia about the same axis and thus considerably increase its angular speed.
  Floating and drifting by its own initial inertia, the lifeless spacecraft or what it seemed to be, grew smaller and smaller as it merged with the background of different colored planets.
  The force of the impact is so great that it pushes the minivan toward the curb where the force of inertia overrides its center of gravity.

Derivatives

inertialess

adjective

The mirror surface of the ball doubles as a solar collector, and everything, the radio control, the laser, targeting, gyros, inertialess drive, all run off the battery.
Example sentencesExamples
- The doors close as soon as Jewel is clear, and the inertialess transport quickly jets away from the building, circling around the city center and out over the desert.
- The thin-layer lubrication effect is lost due to the presence of the free surface, and inertialess instability occurs.
- A simple inertialess quasi-real-time microwave holographic recording system is described and preliminary results are presented.

Origin

Early 18th century (in sense 2): from Latin, from iners, inert- (see inert).

Rhymes

Persia

Definition of inertia in US English:

inertia

nouniˈnərSHəɪˈnərʃə

1A tendency to do nothing or to remain unchanged.
无为；无变化，惰性
the bureaucratic inertia of government
各级政府的官僚主义惰性。
Example sentencesExamples
- All medical care systems sometimes experience some inertia or resistance to change.
- What are the strengths that enabled him to survive in a country where plotting is endemic and where almost all attempts at change run into the historic forces of inertia, conservatism and suspicion?
- It will indicate to the Australian people the absolute determination of this Government to avoid any sense of passivity or any sense of complacency or inertia.
- Do we suffer petrification through continued stasis and inertia or do we trust our inner, creative, inspirational, communal selves and take on the challenge of change?
- Consumer passivity and inertia are the greatest allies of the rapacious banks and other financial institutions.
- As you push yourself to overcome inertia, you need to work against the tendency to feel discouraged and hopeless.
- The capital city needs at its helm a person with ideas and energy who can combat the forces of inertia and inefficiency, and who can initiate and manage urgently needed change.
- Delays and adjournments dog the work of the courts, and the consequent administrative inertia can sap the energy and enthusiasm of even the most committed researcher.
- But Arctic Bay residents have received little help and support in advancing their proposal, and their aspirations are now drowning in bureaucratic inertia.
- Under current policy there is too much latitude for force structure decisions based on personal whim, the prevailing fashion or as default decisions arising out of bureaucratic compromise or inertia.
- But whatever the smart individuals inside these organizations might think, bureaucratic inertia is killing those golden-egg geese.
- No individual names, but there is a general mindset and inertia of individuals in the bureaucracy, including in [my] office.
- It very well may be a happier year in commodity markets if the facts of last year's short crop overcome continued global economic inertia.
- In short, purposeful and disciplined policy and funding strategies will have to overcome political inertia and resistance.
- So, giving enough money to councils without dealing with the inherent inertia of management and rampant laziness would be like pouring grain in a bag full of holes.
- Ignorance, fear, inertia, and stubbornness remain to be overcome.
- It is an astonishing victory over the forces of government inertia, and Hodge could not resist basking in her moment of glory.
- It's not yet possible to predict whether the political system will completely dissipate away under the forces of inertia, or whether some renewed political structure will emerge from the ether.
- So, whereas what was required under a dictatorship was exceptional courage, what citizens in democracies have to do is overcome apathy and inertia.
- We prefer to focus on the elusive bureaucrat, the real source of inertia, or lack of it.
Synonyms
inactivity, inaction, inactiveness, inertness, passivity, apathy, accidie, malaise, stagnation, dullness, enervation, sluggishness, lethargy, languor, languidness, listlessness, torpor, torpidity, idleness, indolence, laziness, sloth, slothfulness
2Physics
A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
〔物理〕惯性。参见MOMENT OF INERTIA
See also moment of inertia
Example sentencesExamples
- Moment of inertia is a fundamental property in rotational mechanics.
- Theoretical work from the 1990s suggests a tantalizing connection between inertia and zero-point energy.
- How fast and in what order remains to be seen, but the direction is a matter of inertia without friction.
- Adding up to six helium atoms drove the molecule's inertia up, they report.
- A better way to measure the mass of a microscopic sample is to quantify the sample's inertia as it is forced into motion.
- Electrons possess inertia, so remain at rest or in uniform motion in the same direction unless acted upon by some external force.
- In a sense, physics began with Descartes and the notion of inertia - that blinding flash of insight that the natural state of motion is a constant velocity.
- Mass can be measured from an object's tendency to resist moving, i.e., its inertia.
- Why does the amount of matter affect the amount of inertia?
- Those laws provided the law of inertia governing motion of atoms in between collisions and laws of impact governing collisions.
- Unlike Galileo, Newton insisted that the law of inertia applied only to motion in a straight line, not circular motion.
1. 2.1with modifier Resistance to change in some other physical property.
  惰性
  the thermal inertia of the oceans will delay the full rise in temperature for a few decades
  海洋的热惰性会在几十年内延迟气温的全面上升。
  Example sentencesExamples
  Soil for the grass over the common room adds to the thermal inertia of the whole.
  Such examples underscore how adaptive nature really is despite biological inertia and how natural selection ‘makes the best of a bad situation’.
  The ship wasn't moving so there was no external inertia to overcome, or I likely would not have been able to make the trip.
  Floating and drifting by its own initial inertia, the lifeless spacecraft or what it seemed to be, grew smaller and smaller as it merged with the background of different colored planets.
  With the force of inertia, the suits continued to float out in space like simple debris.
  Centrifugal ‘force’ is really a function of the inertia of the object being pushed into a circle.
  In intermediate Re ranges, both viscosity and inertia determine the flow patterns.
  The force of the impact is so great that it pushes the minivan toward the curb where the force of inertia overrides its center of gravity.
  Earth's mass, moreover, measures Earth's inertia or sluggishness if we tried to stop or change its movement through space.
  The dominating force opposing motion therefore arises from viscosity rather than inertia.
  The relatively large mass and thermal inertia of female desert tortoises usually prevents winter activity but facilitates their relaxed homeostasis.
  By the force of its own inertia, the club flew towards the wall, breaking into pieces.
  But Earth is very massive compared to the object, so its inertia or resistance to acceleration is much greater.
  All that extra weight has inertia, which you have to overcome to turn, so increasing the weight doesn't help at all.
  Medieval thinkers had not yet mastered the concept of inertia, the tendency for objects to resist any change in their movement.
  A projectile is an object that has been launched, shot, hurled, thrown or by other means projected and which continues in motion due to its own inertia.
  If the fuel burns rapidly enough, it is confined by its own inertia and requires no external confinement system.
  Interestingly, the few studies that have explored this issue seem to point to an overwhelmingly large contribution of wing inertia to the total forces that must be generated.
  By pulling in its legs, the cat can considerably reduce it rotational inertia about the same axis and thus considerably increase its angular speed.
  A heavy body weight is a disincentive for movement and physical activity, creating ‘movement inertia.’

Origin

Early 18th century (in inertia (sense 2)): from Latin, from iners, inert- (see inert).

单词	inertia
释义	Definition of inertia in English: inertia noun ɪˈnəːʃəɪˈnərʃə mass noun 1A tendency to do nothing or to remain unchanged. 无为；无变化，惰性 the bureaucratic inertia of the various tiers of government 各级政府的官僚主义惰性。 Example sentencesExamples So, giving enough money to councils without dealing with the inherent inertia of management and rampant laziness would be like pouring grain in a bag full of holes. It will indicate to the Australian people the absolute determination of this Government to avoid any sense of passivity or any sense of complacency or inertia. As you push yourself to overcome inertia, you need to work against the tendency to feel discouraged and hopeless. It is an astonishing victory over the forces of government inertia, and Hodge could not resist basking in her moment of glory. What are the strengths that enabled him to survive in a country where plotting is endemic and where almost all attempts at change run into the historic forces of inertia, conservatism and suspicion? It very well may be a happier year in commodity markets if the facts of last year's short crop overcome continued global economic inertia. In short, purposeful and disciplined policy and funding strategies will have to overcome political inertia and resistance. So, whereas what was required under a dictatorship was exceptional courage, what citizens in democracies have to do is overcome apathy and inertia. Consumer passivity and inertia are the greatest allies of the rapacious banks and other financial institutions. Under current policy there is too much latitude for force structure decisions based on personal whim, the prevailing fashion or as default decisions arising out of bureaucratic compromise or inertia. But whatever the smart individuals inside these organizations might think, bureaucratic inertia is killing those golden-egg geese. Ignorance, fear, inertia, and stubbornness remain to be overcome. We prefer to focus on the elusive bureaucrat, the real source of inertia, or lack of it. The capital city needs at its helm a person with ideas and energy who can combat the forces of inertia and inefficiency, and who can initiate and manage urgently needed change. No individual names, but there is a general mindset and inertia of individuals in the bureaucracy, including in [my] office. It's not yet possible to predict whether the political system will completely dissipate away under the forces of inertia, or whether some renewed political structure will emerge from the ether. But Arctic Bay residents have received little help and support in advancing their proposal, and their aspirations are now drowning in bureaucratic inertia. Delays and adjournments dog the work of the courts, and the consequent administrative inertia can sap the energy and enthusiasm of even the most committed researcher. All medical care systems sometimes experience some inertia or resistance to change. Do we suffer petrification through continued stasis and inertia or do we trust our inner, creative, inspirational, communal selves and take on the challenge of change? Synonyms inactivity, inaction, inactiveness, inertness, passivity, apathy, accidie, malaise, stagnation, dullness, enervation, sluggishness, lethargy, languor, languidness, listlessness, torpor, torpidity, idleness, indolence, laziness, sloth, slothfulness motionlessness, immobility, lifelessness French archaic fainéance rare stasis, otiosity, hebetude 2Physics A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force. 〔物理〕惯性。参见MOMENT OF INERTIA the power required to overcome friction and the inertia of the moving parts See also moment of inertia Example sentencesExamples Theoretical work from the 1990s suggests a tantalizing connection between inertia and zero-point energy. Moment of inertia is a fundamental property in rotational mechanics. A better way to measure the mass of a microscopic sample is to quantify the sample's inertia as it is forced into motion. Mass can be measured from an object's tendency to resist moving, i.e., its inertia. Those laws provided the law of inertia governing motion of atoms in between collisions and laws of impact governing collisions. In a sense, physics began with Descartes and the notion of inertia - that blinding flash of insight that the natural state of motion is a constant velocity. Electrons possess inertia, so remain at rest or in uniform motion in the same direction unless acted upon by some external force. Adding up to six helium atoms drove the molecule's inertia up, they report. How fast and in what order remains to be seen, but the direction is a matter of inertia without friction. Why does the amount of matter affect the amount of inertia? Unlike Galileo, Newton insisted that the law of inertia applied only to motion in a straight line, not circular motion. 2.1with modifier Resistance to change in some other physical property. 惰性 the thermal inertia of the oceans will delay the full rise in temperature for a few decades 海洋的热惰性会在几十年内延迟气温的全面上升。 Example sentencesExamples A projectile is an object that has been launched, shot, hurled, thrown or by other means projected and which continues in motion due to its own inertia. If the fuel burns rapidly enough, it is confined by its own inertia and requires no external confinement system. Interestingly, the few studies that have explored this issue seem to point to an overwhelmingly large contribution of wing inertia to the total forces that must be generated. In intermediate Re ranges, both viscosity and inertia determine the flow patterns. Earth's mass, moreover, measures Earth's inertia or sluggishness if we tried to stop or change its movement through space. With the force of inertia, the suits continued to float out in space like simple debris. A heavy body weight is a disincentive for movement and physical activity, creating ‘movement inertia.’ Such examples underscore how adaptive nature really is despite biological inertia and how natural selection ‘makes the best of a bad situation’. The ship wasn't moving so there was no external inertia to overcome, or I likely would not have been able to make the trip. The relatively large mass and thermal inertia of female desert tortoises usually prevents winter activity but facilitates their relaxed homeostasis. All that extra weight has inertia, which you have to overcome to turn, so increasing the weight doesn't help at all. Soil for the grass over the common room adds to the thermal inertia of the whole. By the force of its own inertia, the club flew towards the wall, breaking into pieces. Centrifugal ‘force’ is really a function of the inertia of the object being pushed into a circle. The dominating force opposing motion therefore arises from viscosity rather than inertia. But Earth is very massive compared to the object, so its inertia or resistance to acceleration is much greater. Medieval thinkers had not yet mastered the concept of inertia, the tendency for objects to resist any change in their movement. By pulling in its legs, the cat can considerably reduce it rotational inertia about the same axis and thus considerably increase its angular speed. Floating and drifting by its own initial inertia, the lifeless spacecraft or what it seemed to be, grew smaller and smaller as it merged with the background of different colored planets. The force of the impact is so great that it pushes the minivan toward the curb where the force of inertia overrides its center of gravity. Derivatives inertialess adjective The mirror surface of the ball doubles as a solar collector, and everything, the radio control, the laser, targeting, gyros, inertialess drive, all run off the battery. Example sentencesExamples The doors close as soon as Jewel is clear, and the inertialess transport quickly jets away from the building, circling around the city center and out over the desert. The thin-layer lubrication effect is lost due to the presence of the free surface, and inertialess instability occurs. A simple inertialess quasi-real-time microwave holographic recording system is described and preliminary results are presented. Origin Early 18th century (in sense 2): from Latin, from iners, inert- (see inert). Rhymes Persia Definition of inertia in US English: inertia nouniˈnərSHəɪˈnərʃə 1A tendency to do nothing or to remain unchanged. 无为；无变化，惰性 the bureaucratic inertia of government 各级政府的官僚主义惰性。 Example sentencesExamples All medical care systems sometimes experience some inertia or resistance to change. What are the strengths that enabled him to survive in a country where plotting is endemic and where almost all attempts at change run into the historic forces of inertia, conservatism and suspicion? It will indicate to the Australian people the absolute determination of this Government to avoid any sense of passivity or any sense of complacency or inertia. Do we suffer petrification through continued stasis and inertia or do we trust our inner, creative, inspirational, communal selves and take on the challenge of change? Consumer passivity and inertia are the greatest allies of the rapacious banks and other financial institutions. As you push yourself to overcome inertia, you need to work against the tendency to feel discouraged and hopeless. The capital city needs at its helm a person with ideas and energy who can combat the forces of inertia and inefficiency, and who can initiate and manage urgently needed change. Delays and adjournments dog the work of the courts, and the consequent administrative inertia can sap the energy and enthusiasm of even the most committed researcher. But Arctic Bay residents have received little help and support in advancing their proposal, and their aspirations are now drowning in bureaucratic inertia. Under current policy there is too much latitude for force structure decisions based on personal whim, the prevailing fashion or as default decisions arising out of bureaucratic compromise or inertia. But whatever the smart individuals inside these organizations might think, bureaucratic inertia is killing those golden-egg geese. No individual names, but there is a general mindset and inertia of individuals in the bureaucracy, including in [my] office. It very well may be a happier year in commodity markets if the facts of last year's short crop overcome continued global economic inertia. In short, purposeful and disciplined policy and funding strategies will have to overcome political inertia and resistance. So, giving enough money to councils without dealing with the inherent inertia of management and rampant laziness would be like pouring grain in a bag full of holes. Ignorance, fear, inertia, and stubbornness remain to be overcome. It is an astonishing victory over the forces of government inertia, and Hodge could not resist basking in her moment of glory. It's not yet possible to predict whether the political system will completely dissipate away under the forces of inertia, or whether some renewed political structure will emerge from the ether. So, whereas what was required under a dictatorship was exceptional courage, what citizens in democracies have to do is overcome apathy and inertia. We prefer to focus on the elusive bureaucrat, the real source of inertia, or lack of it. Synonyms inactivity, inaction, inactiveness, inertness, passivity, apathy, accidie, malaise, stagnation, dullness, enervation, sluggishness, lethargy, languor, languidness, listlessness, torpor, torpidity, idleness, indolence, laziness, sloth, slothfulness 2Physics A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force. 〔物理〕惯性。参见MOMENT OF INERTIA See also moment of inertia Example sentencesExamples Moment of inertia is a fundamental property in rotational mechanics. Theoretical work from the 1990s suggests a tantalizing connection between inertia and zero-point energy. How fast and in what order remains to be seen, but the direction is a matter of inertia without friction. Adding up to six helium atoms drove the molecule's inertia up, they report. A better way to measure the mass of a microscopic sample is to quantify the sample's inertia as it is forced into motion. Electrons possess inertia, so remain at rest or in uniform motion in the same direction unless acted upon by some external force. In a sense, physics began with Descartes and the notion of inertia - that blinding flash of insight that the natural state of motion is a constant velocity. Mass can be measured from an object's tendency to resist moving, i.e., its inertia. Why does the amount of matter affect the amount of inertia? Those laws provided the law of inertia governing motion of atoms in between collisions and laws of impact governing collisions. Unlike Galileo, Newton insisted that the law of inertia applied only to motion in a straight line, not circular motion. 2.1with modifier Resistance to change in some other physical property. 惰性 the thermal inertia of the oceans will delay the full rise in temperature for a few decades 海洋的热惰性会在几十年内延迟气温的全面上升。 Example sentencesExamples Soil for the grass over the common room adds to the thermal inertia of the whole. Such examples underscore how adaptive nature really is despite biological inertia and how natural selection ‘makes the best of a bad situation’. The ship wasn't moving so there was no external inertia to overcome, or I likely would not have been able to make the trip. Floating and drifting by its own initial inertia, the lifeless spacecraft or what it seemed to be, grew smaller and smaller as it merged with the background of different colored planets. With the force of inertia, the suits continued to float out in space like simple debris. Centrifugal ‘force’ is really a function of the inertia of the object being pushed into a circle. In intermediate Re ranges, both viscosity and inertia determine the flow patterns. The force of the impact is so great that it pushes the minivan toward the curb where the force of inertia overrides its center of gravity. Earth's mass, moreover, measures Earth's inertia or sluggishness if we tried to stop or change its movement through space. The dominating force opposing motion therefore arises from viscosity rather than inertia. The relatively large mass and thermal inertia of female desert tortoises usually prevents winter activity but facilitates their relaxed homeostasis. By the force of its own inertia, the club flew towards the wall, breaking into pieces. But Earth is very massive compared to the object, so its inertia or resistance to acceleration is much greater. All that extra weight has inertia, which you have to overcome to turn, so increasing the weight doesn't help at all. Medieval thinkers had not yet mastered the concept of inertia, the tendency for objects to resist any change in their movement. A projectile is an object that has been launched, shot, hurled, thrown or by other means projected and which continues in motion due to its own inertia. If the fuel burns rapidly enough, it is confined by its own inertia and requires no external confinement system. Interestingly, the few studies that have explored this issue seem to point to an overwhelmingly large contribution of wing inertia to the total forces that must be generated. By pulling in its legs, the cat can considerably reduce it rotational inertia about the same axis and thus considerably increase its angular speed. A heavy body weight is a disincentive for movement and physical activity, creating ‘movement inertia.’ Origin Early 18th century (in inertia (sense 2)): from Latin, from iners, inert- (see inert).
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