The Collaborative International Dictionary of English v.0.48:
acrylonitrile \acrylonitrile\ n. 1. a colorless liquid compound (H2C:CH.CN); used as raw material for acrylic fibers, and as a solvent. Syn: vinyl cyanide, cyanoethylene, 2-propenenitrile [WordNet 1.5 +PJC]WordNet (r) 3.0 (2006):
acrylonitrile n 1: a colorless liquid unsaturated nitrile made from propene [syn: propenonitrile, acrylonitrile, vinyl cyanide]