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asteroid

as·ter·oid

asteroid

 
pronunciation:
ae st roId
features:
Word Combinations (noun), Word Explorer, Word Parts
part of speech: noun
definition: any of thousands of celestial bodies with diameters between one and five hundred miles that revolve around the sun in orbits that lie mostly between the orbits of Jupiter and Mars; planetoid.
Most asteroids in our solar system are located in what is called the asteroid belt.
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derivation: asteroidal (adj.)
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  outer space, space
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