a yellowish or colorless, acrid liquid, CH:CHCHO, whose fumes irritate the eyes: it is formed by the decomposition of glycerol and is used in organic synthesis and in plastics, poison gas, etc.
Origin of acroleinacr(id) + Classical Latin olere, to smell + -in
A colorless, flammable, poisonous liquid aldehyde, C3H4O, having an acrid odor and vapors irritating to the eyes.
Origin of acroleinacr(id) + olein.
(countable and uncountable, plural acroleins)