Meaning of modacrylic fiber

mod'a•cryl'ic fi'ber

Pronunciation: (mod'u-kril'ik, mod"-), [key]
  1. any of various synthetic copolymer textile fibers, as Dynel, containing less than 85 percent but more than 35 percent of acrylonitrile. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.