Standard Lemma guide

protonosphere

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

Synonym of geocorona; a layer of the atmosphere.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Qualifier: Earth's atmosphere

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: geocorona

Antonyms: none provided

2

noun

Meaning 2

Analogs of the geocorona

Definition source: English Wiktionary via Wiktextract

Usage: countable

Qualifier: plasma physics; space physics; plasma physics; space physics

Topics: climatology, meteorology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From proton + -o- + -sphere. From the content of this layer of the atmosphere being primarily protons (“positively ionized protium isotope of hydrogen”).

Across languages

Translations

3 source translations are retained for this English entry.

  • French: protonosphère — Translations
  • Spanish: protonósfera — Translations
  • Spanish: protonosfera — Translations