'Metacrolein' definitions:

Definition of 'Metacrolein'

From: GCIDE

Metacrolein \Met`a*cro"le*in\, 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]