n. [ L. acer sharp + olēre to smell. ] (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. [ 1913 Webster ]
n. [ Pref. met- + acrolein. ] (Chem.) A polymeric modification of acrolein obtained by heating it with caustic potash. It is a crystalline substance having an aromatic odor. [ 1913 Webster ]