What does "geocorona" mean?

The region of ionized hydrogen (protons) that makes up the outermost region of the Earth's atmosphere (and by extension of other planets.)

What is a synonym for "geocorona"?

Common synonyms include: protonosphere.

noun

noun ·Rare ·Advanced level

Noun

1
The region of ionized hydrogen (protons) that makes up the outermost region of the Earth's atmosphere (and by extension of other planets.) uncountable
2
Analogs of the geocorona; Synonym of protonosphere. broadly

From geo- + corona. From being the luminous part of the atmosphere, the outermost region of Earth's atmosphere.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.