Etymology

-curonium

Today it means: Used to form names of neuromuscular blocking agents with rigid structure. Full definition →

English onium ← New Latin ammōnium
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The story

  1. Englishcurare
  2. New Latinammōnium
  3. Englishammonium
  4. Englishonium
  5. English today-curonium

From cur(are) + -onium (“quaternary ammonium compound”).

Etymology from Wiktionary, CC BY-SA 4.0.