Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun astronomy Any secondary body in the
Solar system that is geologically differentiated or inhydrostatic equilibrium and thus has a planet-like geology: aplanet ,dwarf planet , or the larger moons and asteroids. - noun astronomy Any substantial body in orbit around the
Sun or other star: aplanet ,minor planet , orcomet . - noun astronomy Any substantial body associated with the development of planets: a
protoplanet ,planetesimal .
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