Meaning of betamethyl acrolein

be'ta•meth'yl acro'lein

Pronunciation: (bā'tu-meth'ul, bā"- or, esp. Brit., bē'tu-, bē"-), [key]
  1. crotonaldehyde.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.