exobase

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noun

The base altitude of the exosphere, where particles often escape the atmosphere as it blends into space.

Similar
exopausecritical altitude
Scrabble 16
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Meanings

nounexobase (plural exobases)

plural exobases

  1. The base altitude of the exosphere, where particles often escape the atmosphere as it blends into space.

    Synonyms: exopause, critical altitude

Synonyms & antonyms

nounThe base altitude of the exosphere, where particles often escape the atmosphere as it blends into space.

Similar
exopausecritical altitude
Also see
critical altitudeexopausethermopause

Origin

From exo- + base.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

Source: exobase on Wiktionary, CC BY-SA 4.0.