ketene

  1. Noun.  (organic chemistry) any of a class of unsaturated ketones, having a general formula R1R2C=C=O, that react as if they were inner acid anhydrides.
  2. Noun.  (organic compound) the parent compound of this class, CH2=C=O, an unstable, reactive colourless gas.

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This entry was last updated on RefTopia from its source on 3/20/2012.