Acrolein
Pronunciation : A*cro"le*in
Part of Speech : n.
Etymology : [L. acer sharp + olere to smell.] (Chem.)
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913