acrolein

(ə krōlē in)

noun

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: acr(id) + L olere, to smell + -in

See acrolein in American Heritage Dictionary 4

noun
A colorless, flammable, poisonous liquid aldehyde, CH2CHCHO, having an acrid odor and vapors irritating to the eyes.

Origin:

Origin: acr(id)

Origin: + olein

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