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单词 oxygen
释义

Definition of oxygen in English:

oxygen

noun ˈɒksɪdʒ(ə)nˈɑksədʒən
mass noun
  • A colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.

    Oxygen is essential to plant and animal life and is a constituent of most organic compounds. It forms about 20 per cent of the earth's atmosphere, and is the most abundant element in the earth's crust, mainly in the form of oxides, silicates, and carbonates

    if breathing stops, there is no oxygen getting to the brain and the cells begin to die
    hydrogen and carbon in the fuel combine with the oxygen in the air to form carbon dioxide and water
    as modifier an oxygen supply
    Example sentencesExamples
    • The heart muscle is supplied with oxygen by blood arriving in the coronary arteries.
    • The chemicals in tobacco reduce the flow of oxygen around the mother's blood stream.
    • In other words, it is possible to die from a lack of oxygen, because of ozone poisoning.
    • It is important to minimize the new wine's exposure to oxygen, whatever its colour.
    • There seems to be less oxygen in town air on a very hot day, even in a quiet corner like Bath Place.
    • Therefore in light plants gave out oxygen, but in the dark they emitted carbon dioxide.
    • This oxygen may also support nitrifying bacteria that convert ammonia to nitrate.
    • There may also be a greatly reduced oxygen content in the air at the bottom of deep wells.
    • Copper reacts with oxygen and carbon dioxide to form a greenish patina of copper carbonate.
    • The air in this chamber is very low in oxygen, so divers are advised not to remove their regulators.
    • He also had difficulty breathing and had to be given oxygen on arrival at hospital.
    • In addition, the very reactive singlet oxygen can be generated by an input of energy.
    • On the one hand, there is the body's need for oxygen and its supply from the lungs.
    • It results from a temporary reduction in blood and oxygen supply to part of the brain.
    • Solar panels power an electrolyser that separates water into hydrogen and oxygen.
    • Despite the addition of oxygen and the issue of potash cartridges, the air is foul.
    • Iron is needed to produce more blood to supply the baby with the necessary nutrients and oxygen.
    • To avoid the production of oxygen via photosynthesis, plants were kept in the dark.
    • Energy is generated by the reaction of hydrogen and oxygen across a catalytic membrane.
    • This maintained the same concentration of oxygen in the gas flow at the point of analysis.

Derivatives

  • oxygenic

  • adjective
    • As such they are well suited as intracellular sunscreens, particularly in oxygenic phototrophic symbioses.
      Example sentencesExamples
      • The simultaneous presence of strong oxidants and strong reductants during oxygenic photosynthesis is the basis for regulation.
      • While the three classes perform the same reaction, they do so under different oxygenic conditions: class I is strictly aerobic, class II is operational in both aerobic and anaerobic conditions and class III is strictly anaerobic.
      • An excess of light brings about the inactivation of oxygenic photosynthesis, a phenomenon known as photoinhibition.
      • Although the majority of species of oxygenic photosynthetic bacteria utilize phycobilisomes as light-harvesting pigments, a number of important species use different systems.
  • oxygenous

  • adjective ɒkˈsɪdʒɪnəs
    • A process for separating oxygenous organic compounds from aqueous media by liquid-liquid extraction with an organic extraction agent.
      Example sentencesExamples
      • In the case of distillation columns or in the case of reactors, these oxygenous gases are generally metered into the bottom, for example into the bottom circuit.

Origin

Late 18th century: from French (principe) oxygène 'acidifying constituent' (because at first it was held to be the essential component in the formation of acids).

Definition of oxygen in US English:

oxygen

nounˈɑksədʒənˈäksəjən
  • A colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.

    Oxygen is essential to plant and animal life and is a constituent of most organic compounds. It forms about 20 percent of the earth's atmosphere, and is the most abundant element in the earth's crust, mainly in the form of oxides, silicates, and carbonates

    if breathing stops, there is no oxygen getting to the brain and the cells begin to die
    hydrogen and carbon in the fuel combine with the oxygen in the air to form carbon dioxide and water
    as modifier an oxygen supply
    Example sentencesExamples
    • The heart muscle is supplied with oxygen by blood arriving in the coronary arteries.
    • Energy is generated by the reaction of hydrogen and oxygen across a catalytic membrane.
    • There seems to be less oxygen in town air on a very hot day, even in a quiet corner like Bath Place.
    • This oxygen may also support nitrifying bacteria that convert ammonia to nitrate.
    • The air in this chamber is very low in oxygen, so divers are advised not to remove their regulators.
    • The chemicals in tobacco reduce the flow of oxygen around the mother's blood stream.
    • There may also be a greatly reduced oxygen content in the air at the bottom of deep wells.
    • Therefore in light plants gave out oxygen, but in the dark they emitted carbon dioxide.
    • In other words, it is possible to die from a lack of oxygen, because of ozone poisoning.
    • It results from a temporary reduction in blood and oxygen supply to part of the brain.
    • On the one hand, there is the body's need for oxygen and its supply from the lungs.
    • Solar panels power an electrolyser that separates water into hydrogen and oxygen.
    • Copper reacts with oxygen and carbon dioxide to form a greenish patina of copper carbonate.
    • Iron is needed to produce more blood to supply the baby with the necessary nutrients and oxygen.
    • In addition, the very reactive singlet oxygen can be generated by an input of energy.
    • To avoid the production of oxygen via photosynthesis, plants were kept in the dark.
    • This maintained the same concentration of oxygen in the gas flow at the point of analysis.
    • Despite the addition of oxygen and the issue of potash cartridges, the air is foul.
    • It is important to minimize the new wine's exposure to oxygen, whatever its colour.
    • He also had difficulty breathing and had to be given oxygen on arrival at hospital.

Origin

Late 18th century: from French ( principe) oxygène ‘acidifying constituent’ (because at first it was held to be the essential component in the formation of acids).

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更新时间:2024/9/21 13:33:07