| 单词 | planetoid |
| 释义 | planetoid (once / 29256 pages) n WORD FAMILY planetoid: planetoids+/planet: planetary, planetoid, planets/planetary: interplanetary, planetarily USAGE EXAMPLESEach discovery added another complication to his computer models of the solar system, which twirl planetoids around the sun. Science Magazine(Oct 25, 2016) The way Dr. Brown pushes his ideas around, he ought to be a planetoid. New York Times(Jan 20, 2016) NASA's New Horizons spacecraft passed by the ice-and-rock planetoid and its entourage of five moons at 7:49 a.m. Reuters(Jul 14, 2015) n any of numerous small celestial bodies that move around the sun Syn|Exp|Hypo|Hyper minor planet Quaoar a planetoid discovered in 2002 Sednaa planetoid of rock and ice about three-quarters the size of Pluto discovered in 2003; the most distant object known to orbit around the sun Apollo asteroidan asteroid whose orbit crosses the Earth's orbit Ceresthe largest asteroid and the first discovered Pallasa large asteroid; the second asteroid to be discovered Vestathe brightest asteroid but the fourth to be discovered asteroid any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter) KBO, Kuiper belt objectany of many minor planets in the Kuiper belt outside the orbit of Neptune at the edge of the solar system Chironan asteroid discovered in 1977; it is unique in having an orbit lying mainly between the orbits of Saturn and Uranus celestial body, heavenly body natural objects visible in the sky |
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