acrolein Meaning, Definition & Usage

  1. noun a pungent colorless unsaturated liquid aldehyde made from propene
    propenal.

WordNet

A*cro"le*in noun
Etymology
L. acer sharp + olere to smell.
Definitions
  1. (Chem.) A limpid, colorless, highly volatile liquid, obtained by the dehydration of glycerin, or the destructive distillation of neutral fats containing glycerin. Its vapors are intensely irritating. Watts.

Webster 1913