Definitions from Wiktionary (planetoid)

▸ noun:  (astronomy, dated) An asteroid of any size
▸ noun:  (astronomy, dated) An asteroid-like body in an orbit beyond the asteroid belt, such as a centaur or Kuiper belt object
▸ noun:  (astronomy) A larger, planetary, body in orbit around the Sun, such as Vesta or (candidate) dwarf planets such Eris or Sedna
▸ noun:  (astronomy) Any planetary body, including classical planets and moons: a planetary-mass object
▸ noun:  (astronomy) A dwarf planet
▸ Also see planetoid



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