acrylic resin

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Any of numerous thermoplastic or thermosetting polymers or copolymers of acrylic acid, methacrylic acid, esters of these acids, or acrylonitrile, used to produce paints, synthetic rubbers, and lightweight plastics.

Wiktionary

1. n. organic chemistry Any of many thermoplastic or thermosetting polymers or copolymers of acrylic acid, methacrylic acid, esters of these acids, or acrylonitrile; used in paint and many plastics.

GNU Webster's 1913

1. n. (Chem.) a thermoplastic made by polymerization of acrylic acid or methacrylic acid or some derivative of these (such as the esters or amides). It can be formed into a clear hard plastic, and is the basis for the commercial plastics called Lucite and Plexiglass.

WordNet 3.0

1. n. a glassy thermoplastic; can be cast and molded or used in coatings and adhesives