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1. Oxford American Dictionary

   asteroid

   • IPA[ˈastəˌroid]

   美式

   • n.
     a small rocky body orbiting the sun. Large numbers of these, ranging in size from nearly 600 miles (1,000 km) across (Ceres) to dust particles, are found (as the asteroid belt) especially between the orbits of Mars and Jupiter, though some have more eccentric orbits, and a few pass close to the earth or enter the atmosphere as meteors.；an echinoderm of the class Asteroidea, which comprises the starfishes.
   • adj.
     relating to or denoting echinoderms of the class Asteroidea.

   • noun: asteroid, plural noun: asteroids

2. • 釋義
   • 相關詞

   n.

   名詞

   • 1. a small rocky body orbiting the sun. Large numbers of these, ranging in size from nearly 600 miles (1,000 km) across (Ceres) to dust particles, are found (as the asteroid belt) especially between the orbits of Mars and Jupiter, though some have more eccentric orbits, and a few pass close to the earth or enter the atmosphere as meteors.
   • 2. an echinoderm of the class Asteroidea, which comprises the starfishes.

   adj.

   形容詞

   • 1. relating to or denoting echinoderms of the class Asteroidea.

   Trojan asteroid

   • n.
     an asteroid belonging to one of two groups which orbit the sun at the same distance as Jupiter, ...

   Oxford Dictionary

   Trojan asteroid

   • n.
     an asteroid belonging to one of two groups which orbit the sun at the same distance as Jupiter, ...

   Oxford American Dictionary

3. • 更多解釋

   asteroid

   • IPA[ˈast(ə)rɔɪd]

   英式

   • n.
     a small rocky body orbiting the sun. Large numbers of these, ranging enormously in size, are ...
   • adj.
     relating to or denoting echinoderms of the class Asteroidea.

   Oxford Dictionary