Etymology

cefalonium

C3E1F4A1L1O1N1I1U1M3

Today it means: A cephalosporin antibiotic. Full definition →

English onium ← New Latin ammōnium
Ask AI about its historyChatGPTClaudePerplexityGoogle AIGrok

The story

  1. Englishcephalosporin
  2. Englishcephalosporanic
  3. New Latinammōnium
  4. Englishammonium
  5. Englishonium
  6. English todaycefalonium

From cephalo(sporanic acid) + -onium (“quaternary ammonium compound”).

Etymology from Wiktionary, CC BY-SA 4.0.