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Definition of Dwarf planet
1. Noun. (astronomy) As defined by the International Astronomical Union, any body which has achieved hydrostatic equilibrium (which is the shape a body of water would take, as opposed to a small Solar System body), orbits the Sun (as opposed to a moon), and has not "cleared its neighbourhood" of competing bodies (as opposed to a planet). ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Dwarf Planet
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Basque