heterosphere

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noun

The upper part of the atmosphere, above about 60 miles or 100 km, in which there is great variation in its composition.

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Meanings

nounheterosphere (plural heterospheres)

plural heterospheres

  1. The upper part of the atmosphere, above about 60 miles or 100 km, in which there is great variation in its composition.

Origin

From hetero- + -sphere.

Full word history & related roots →

Translations

Catalan heterosfera
  • heterosferaupper part of the atmosphere
Finnish heterosfääri
  • heterosfääriupper part of the atmosphere
French hétérosphère
  • hétérosphèreupper part of the atmosphere
Irish heitrisféar
  • heitrisféarupper part of the atmosphere
Cite this entry
APA

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

MLA

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

Chicago

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

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