/ Dictionary / Index A acrylic fiber: Meaning and Definition of Find definitions for: acryl'ic fi'ber Pronunciation: [key] — Chem. Chem. any of the group of synthetic textile fibers, as Orlon, made by the polymerization of acrylonitrile as the principal component with one or more other monomers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. acrylic ester acrylic resin Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language