sub-Earth

noun

A planet that is substantially less massive than Earth and Venus.

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Meanings

nounsub-Earth (plural sub-Earths)

plural sub-Earths

  1. astronomyA planet that is substantially less massive than Earth and Venus.
Cite this entry
APA

sub-Earth. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/sub-Earth

MLA

“sub-Earth.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sub-Earth. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “sub-Earth,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/sub-Earth.

Source: sub-Earth on Wiktionary, CC BY-SA 4.0.