- any of a group of thermoplastic resins formed by polymerizing the esters of amides of acrylic or methacrylic acid: used chiefly where transparency is desired, as in the methacrylate resins Lucite and Plexiglas.
- any of a group of polymers or copolymers of acrylic acid, its esters, or amides, used as synthetic rubbers, textiles, paints, adhesives, and as plastics such as Perspex
