Etymology

ketene

K5E1T1E1N1E1

Today it means: any of a class of unsaturated ketones, having a general formula R₁R₂C=C=O, that react as if they were inner acid anhydrides Full definition →

English keto- ← German Keton
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The story

  1. GermanKeton
  2. Englishketone
  3. Englishketo-
  4. English todayketene

From keto- + -ene.

Etymology from Wiktionary, CC BY-SA 4.0.