secondary planet

noun

A moon of a planet.

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Meanings

nounsecondary planet (plural secondary planets)

plural secondary planets

  1. archaicobsoleteastronomyA moon of a planet.

Origin

From secondary + planet from being the planet of a planet (a satellite of a planet).

Full word history & related roots →
Cite this entry
APA

secondary planet. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/secondary%20planet

MLA

“secondary planet.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/secondary%20planet. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “secondary planet,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/secondary%20planet.

Source: secondary planet on Wiktionary, CC BY-SA 4.0.