Etymology

alpha-lactam

Today it means: A lactam having a three-membered ring structure. Full definition →

English lactam ← Proto-Indo-European *dʰeh₁- ← Latin ammoniacus
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The story

  1. Proto-Semitic*ʔalp-
  2. Phoenician𐤀𐤋𐤐 (ʾlp)
  3. Ancient Greekἄλφα (álpha)
  4. Englishalpha
  5. Latinlac
  6. Englishlacto-
  7. GermanKeton
  8. Englishketone
  9. Englishlac(tone)
  10. Egyptianjmn
  11. Ancient GreekᾸ̓́μμων (Ắmmōn)
  12. LatinAmmōn
  13. Latinammoniacus
  14. Englishammonia
  15. Proto-Indo-European*dʰeh₁-
  16. Englisham(ide)
  17. Englishlactam
  18. English todayalpha-lactam

From alpha + lactam.

Etymology from Wiktionary, CC BY-SA 4.0.