单词 | asteroid |
释义 | Word Frequency asteroid(ˈæstəˌrɔɪd) noun 1. Also called: minor planet, planetoid any of numerous small celestial bodies that move around the sun mainly between the orbits of Mars and Jupiter. Their diameters range from 930 kilometres (Ceres) to less than one kilometre 2. Also called: asteroidean (ˌæstəˈrɔɪdɪən) any echinoderm of the class Asteroidea; a starfish adjective also: asteroidal (ˌæstəˈrɔɪdəl) 3. of, relating to, or belonging to the class Asteroidea 4. shaped like a star Word origin C19: from Greek asteroeidēs starlike, from astēr a star |
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