/euh kroh"lee in/ , n. Chem.
a yellow, flammable liquid, C 3 H 4 O, having a stifling odor, usually obtained by the decomposition of glycerol: used chiefly in the synthesis of commercial and pharmaceutical products. Also called acraldehyde, acrylaldehyde, acrylic aldehyde .
[ 1855-60; acr- (s. of acer ) sharp + ole ( re ) to smell + -IN 2 ]