Etymology

amoxicillin

A1M3O1X8I1C3I1L1L1I1N1

Today it means: A moderate-spectrum, bacteriolytic beta-lactam antibiotic with the formula C₁₆H₁₉N₃O₅S, closely related to ampicillin. Full definition →

English penicillin ← Ancient Greek ὀξῠ́ς (oxŭ́s) ← Proto-Indo-European *h₂eḱ-der.?
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The story

  1. Egyptianjmn
  2. Ancient GreekᾸ̓́μμων (Ắmmōn)
  3. LatinAmmōn
  4. Latinammoniacus
  5. Englishammonia
  6. Englishamine
  7. Englisham(ino)-
  8. Proto-Indo-European*pes-
  9. Proto-Indo-European*pes-ni-s
  10. Proto-Italic*peznis
  11. Latinpēnis
  12. Latinpēniculus
  13. Latinpēnicillum
  14. Englishp(en)icillin
  15. Englisham(picillin)
  16. Proto-Indo-European*h₂eḱ-der.?
  17. Ancient Greekὀξῠ́ς (oxŭ́s)
  18. English(hydr)oxy
  19. Englishpenicillin
  20. English todayamoxicillin

From am(picillin) + (hydr)oxy + -cillin.

Etymology from Wiktionary, CC BY-SA 4.0.