Planetoid meaning

plănĭ-toid
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(astronomy) An asteroid of any size.
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(astronomy) An asteroid-like body in an orbit beyond the asteroid belt, such as a centaur or Kuiper belt object.
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(astronomy) A larger, planetary, body in orbit around the Sun, such as Vesta or (candidate) dwarf planets such Eris or Sedna.
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(astronomy) A dwarf planet.
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Origin of planetoid