Etymology

anion

A1N1I1O1N1

Today it means: A negatively charged ion. Full definition →

Ancient Greek ἀνῐόν (anĭón) ← Proto-Hellenic *éimi ← Proto-Indo-European *h₁éyti
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The story

  1. Proto-Indo-European*h₂en-
  2. Proto-Hellenic*aná
  3. Ancient Greekᾰ̓νᾰ́ (ănắ)
  4. Ancient Greekᾰ̓νᾰ- (ănă-)
  5. Proto-Indo-European*h₁ey-
  6. Proto-Indo-European*h₁éyti
  7. Proto-Hellenic*éimi
  8. Ancient Greekῐ̓όν (ĭón)
  9. Ancient Greekἀνῐόν (anĭón)
  10. English todayanion

Learned borrowing from Ancient Greek ἀνιόν (anión, “(thing) going up”), neuter present participle of ἄνειμι (áneimi, “go up”), from ἀνά (aná, “up”) + εἶμι (eîmi, “go”). Coined by English polymath William Whewell in 1834 for Michael Faraday, who introduced it later that year. By surface analysis, an- (“up, away, forward”) + ion.

Etymology from Wiktionary, CC BY-SA 4.0.