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Definitions of asteroid
  1. adjective
    shaped like a star
  2. noun
    any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
Definition that contains asteroid
  • pluto a large asteroid that was once thought to be the farthest known planet from the sun; it has an elliptical orbit
  • vesta the brightest asteroid but the fourth to be discovered
  • ceres the largest asteroid and the first discovered
  • chiron an asteroid discovered in 1977; it is unique in having an orbit lying mainly between the orbits of Saturn and Uranus
  • pallas a large asteroid; the second asteroid to be discovered
  • asteroid belt the region of interplanetary space between Mars and Jupiter where most asteroids are found
  • asteroidal of or relating to or resembling an asteroid
  • outer planet (astronomy) a major planet whose orbit is outside the asteroid belt (Jupiter, Saturn, Uranus, Neptune, Pluto)
  • apollo asteroid an asteroid whose orbit crosses the Earth's orbit
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