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单词 meteoroid
释义

Definition of meteoroid in English:

meteoroid

noun ˈmiːtɪərɔɪdˈmidiəˌrɔɪd
Astronomy
  • A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere.

    〔天文〕流星体

    Example sentencesExamples
    • Whether a meteoroid makes it to Earth's surface or not depends on many factors including the mass, initial velocity, angle of entry, composition, and shape of the body.
    • Once the meteoroids enter the Earth's atmosphere, they are known as meteors and become visible due to the friction caused by air molecules slamming against the surface of the high-velocity particle.
    • However, from time to time, comets suddenly get brighter, and one possible explanation for this is that the comet has struck a small meteoroid in space; perhaps a small lump of rock, 10 cm or a metre in size.
    • The term ‘space debris’ in its largest sense includes all naturally occurring remains of solar and planetary processes: interplanetary dust, meteoroids, asteroids, and comets.
    • It is probably natural to think of meteorites - as the meteoroids that fall to Earth are called - as threatening, even dangerous, phenomena.

Derivatives

  • meteoroidal

  • adjective miːtɪəˈrɔɪd(ə)l
    Astronomy
    • In November 2004 the lunar phase was adequate to observe lunar impact flashes at the time of the Leonid meteor shower, as it was the case in 1999 and 2001, because a large number of meteoroidal impacts were expected to hit the night part of the Moon visible from Earth.
      Example sentencesExamples
      • Among the different forms of meteoroidal disintegration in the atmosphere described above, the quasi-continuous fragmentation is of greatest interest.
      • If you have a small telescope, within your grasp are many thousands of craters, ranging from the grand walled plains to meteoroidal and asteroidal impact craters with their bright ray systems.
      • It was interpreted as a meteoroidal bolide followed by probable meteorite fall.
      • The moon, after all, had acted as a gravitational trap for meteoroidal material accumulated from space over many eons.

Definition of meteoroid in US English:

meteoroid

nounˈmēdēəˌroidˈmidiəˌrɔɪd
Astronomy
  • A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere.

    〔天文〕流星体

    Example sentencesExamples
    • However, from time to time, comets suddenly get brighter, and one possible explanation for this is that the comet has struck a small meteoroid in space; perhaps a small lump of rock, 10 cm or a metre in size.
    • Once the meteoroids enter the Earth's atmosphere, they are known as meteors and become visible due to the friction caused by air molecules slamming against the surface of the high-velocity particle.
    • The term ‘space debris’ in its largest sense includes all naturally occurring remains of solar and planetary processes: interplanetary dust, meteoroids, asteroids, and comets.
    • It is probably natural to think of meteorites - as the meteoroids that fall to Earth are called - as threatening, even dangerous, phenomena.
    • Whether a meteoroid makes it to Earth's surface or not depends on many factors including the mass, initial velocity, angle of entry, composition, and shape of the body.
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更新时间:2024/12/27 17:16:53