thermion

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noun

An electrically charged particle, either an electron or an ion, emitted by a conducting material at high temperatures

OriginEnglish ion ← Ancient Greek ἰόν (ión) ← Proto-Hellenic *éimi →
Scrabble 13
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Meanings

nounthermion (plural thermions)

plural thermions

  1. natural sciencesAn electrically charged particle, either an electron or an ion, emitted by a conducting material at high temperatures

Origin

  1. Englishtherm-
  2. Proto-Indo-European*h₁ey-
  3. Proto-Indo-European*h₁éyti
  4. Proto-Hellenic*éimi
  5. Ancient Greekἰόν (ión)
  6. Englishion
  7. Englishthermion

From therm- + ion.

Full word history & related roots →

Rhymes & wordplay

Anagrams

hormetin
Cite this entry
APA

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

MLA

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

Chicago

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

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