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Definition asteroid

Etymology 1

Borrowed from Ancient Greek ἀστεροειδής (asteroeidḗs), from ἀστήρ (astḗr, “star”) + εἶδος (eîdos, “form”).

Noun

asteroid (plural asteroids)

  1. (zoology) Any member of the taxonomic class Asteroidea; a starfish

Etymology 2

aster +‎ -oid Coined by William Herschel, terming these objects "star-like"

Noun

asteroid (plural asteroids)

  1. (astronomy) A naturally occurring solid object, which is smaller than a planet and is not a comet, that orbits a star
  2. (astronomy) In the Solar system, such a body that orbits within the orbit of Jupiter

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