asteroid
Longman Dictionary of Contemporary English 5++LDOCE 5++as·te·roid /ˈæstərɔɪd/ noun [countable] HAone of the many small planets that move around the Sun, especially between Mars and Jupiter 小行星
Examples from the Corpus
asteroid• Astronomers had accidentally caught a comet in the act of turning into an asteroid.• Comets and asteroids are subjects for Chapter 14.• Two large asteroids have passed alarmingly close to Earth in the past few years.• For example, Vesta, the fourth-largest asteroid, reflects light in a unique way: some 50 meteorites match it closely.• Extraction of helium-3 from the surfaces of asteroids is not likely to compare with that from the Moon.• We do it now on a small scale to bring the rocks into Earth orbit from the asteroid belt.• Finally, the total exposed surface area of the asteroids is less than the surface area of the Moon.• These asteroids with Earth-crossing orbits and orbital periods greater than one Earth year constitute the Apollo family.Origin asteroid (1800-1900) Greek asteroeides “like a star”, from aster “star”as·te·roid nounChineseSyllable
of planets the move Sun, that Corpus around the one small many
asteroid
as‧te‧roid /ˈæstərɔɪd/
noun [countable]
■ in the sky
▪star a large ball of burning gas in space, which can be seen at night as a point of light in the sky: The dark night sky was clear and full of stars.
▪planet one of the large objects that goes around the sun, for example the Earth, Saturn, Mercury, or Mars: The planet Uranus was discovered in 1781.
▪sun the star that gives us light and heat, around which the planets move. There are also many millions of other suns in the universe: The sun came out from behind a cloud. | a dying sun
▪moon the round object that moves around the Earth every 28 days, or a similar object that goes around another planet: The moon rose in the night sky. | Titan is one of the moons of Saturn.
▪asteroid a mass of rock that moves around the sun. Most asteroids are found between Jupiter and Mars: the asteroid belt
▪pulsar a type of star that is far away in space and produces radiation and RADIO WAVES
▪quasar an object like a star that is far away in space and shines extremely brightly
▪supernova a very large exploding star
▪constellation a group of stars that forms a particular pattern and has a name: The constellation of Orion is one of the most easily recognizable patterns of stars in the night sky.
▪galaxy one of the large groups of stars that make up the universe: Astronomers have detected a galaxy 11 billion light years away.
▪the universe all space, including all the stars and planets: How many planets in the universe have life?
as‧te‧roid /ˈæstərɔɪd/
noun [countable] Date: 1800-1900
Language: Greek
Origin: asteroeides 'like a star', from aster 'star'
one of the many small planets that move around the Sun, especially between Mars and JupiterLanguage: Greek
Origin: asteroeides 'like a star', from aster 'star'
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