dwarf planet

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Ceres, an asteroid so big that it is considered a dwarf planet.


dwarf planet (plural dwarf planets)

  1. (astronomy) A planetary (world-like) body of the Solar system, that directly orbits the Sun like the classical planets but does not gravitationally dominate other bodies in the region of its orbit.
    Synonyms: planetoid, quasi-planet, sub-planet
    Hypernyms: minor planet, planet, planetary-mass object
    Hyponyms: ice dwarf, plutoid


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