Etymology

arsenation

ar·sen·at·ion
A1R1S1E1N1A1T1I1O1N1

Today it means: Conversion of a substance to, or reaction of a substance with, an arsenate (“a salt or ester of arsenic acid”). Full definition →

English arsenate ← Middle English arsenik ← Middle French arsenic
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The story

  1. Proto-Indo-European*ǵʰelh₃-
  2. Proto-Indo-European*ǵʰl̥h₃enyom
  3. Proto-Indo-Iranian*ȷ́ʰr̥Hanyam
  4. Proto-Iranian*jr̥Hanyam
  5. Old Median*zaranyam
  6. Old Median*kā
  7. Old Median*zaraniyakā
  8. Middle Persian*zarnīk
  9. Classical Syriacܙܪܢܝܟܐ (zarnīḵā)
  10. Arabicالزَرْنِيخ (az-zarnīḵ)
  11. Medieval Greekἀρσενικόν (arsenikón)
  12. Latinarsenicum
  13. Middle Frencharsenic
  14. Middle Englisharsenik
  15. Englisharsenic
  16. Englisharsenate
  17. English todayarsenation

Probably from arsenate + -ion (suffix denoting an action or process).

Etymology from Wiktionary, CC BY-SA 4.0.