Meanings
nounplanetary object (plural planetary objects)
plural planetary objects
- astronomyAny secondary body in the Solar system that is geologically differentiated or in hydrostatic equilibrium and thus has a planet-like geology: a planet, dwarf planet, or the larger moons and asteroids.
Synonyms: planetary body
- astronomyAny substantial body in orbit around the Sun or other star: a planet, minor planet, or comet.
- astronomyAny substantial body associated with the development of planets: a protoplanet, planetesimal.
Synonyms & antonyms
nounAny secondary body in the Solar system that is geologically differentiated or in hydrostatic equilibrium and thus has a planet-like geology: a planet, dwarf planet, or the larger moons and asteroids.
Similar
Also see
Cite this entry
APA
planetary object. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/planetary%20object
MLA
“planetary object.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/planetary%20object. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “planetary object,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/planetary%20object.
Source: planetary object on Wiktionary, CC BY-SA 4.0.