Etymology

manganous

M3A1N1G2A1N1O1U1S1

Today it means: Containing manganese in its +2 oxidation state. Full definition →

Proto-Indo-European *h₃édosder.? ← English manganese ← French manganèse
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The story

  1. Ancient GreekΜάγνης (Mágnēs)
  2. Ancient GreekΜαγνησία (Magnēsía)
  3. LatinMagnēsia
  4. Latinmagnēsius
  5. Medieval Latinmagnēsia
  6. Italianmanganese
  7. Frenchmanganèse
  8. Englishmanganese
  9. Proto-Indo-European*h₃ed-
  10. Proto-Indo-European*h₃édosder.?
  11. English todaymanganous

From manganese + -ous.

Etymology from Wiktionary, CC BY-SA 4.0.