Pronunciation: (pol'ē-es"tur, pol"ē-es'tur), [key]
1. Chem.a polymer in which the monomer units are linked together by the group –COO–, usually formed by polymerizing a polyhydric alcohol with a polybasic acid: used chiefly in the manufacture of resins, plastics, and textile fibers.
2. Also called poly. a fabric made from such textile fibers.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.