asteroid
A naturally occurring solid object, which is smaller than a planet and a dwarf planet, larger than a meteoroid and not a comet, that orbits a star and often has an irregular shape.
Other meanings
In the Solar System, such a body that orbits within the orbit of Jupiter.
Any member of the taxonomic class Asteroidea; a starfish.
A kind of
- minor planet
Where this comes from
This definition is adapted from “asteroid” on Wiktionary, by its contributors; related-word lists use Open English WordNet (CC BY 4.0, based on Princeton WordNet), published under CC BY-SA 4.0. This page is published under the same licence.