polyacrylonitrile

[ pol-ee-ak-ruh-loh-nahy-tril, -treel, -trahyl ]
/ ˌpɒl iˌæk rə loʊˈnaɪ trɪl, -tril, -traɪl /

noun Chemistry.

a polymer of acrylonitrile used in the manufacture of Orlon and other synthetic textiles.

Origin of polyacrylonitrile

First recorded in 1930–35; poly- + acrylonitrile