One of a group of thermoplastic resins made from esters of acrylic acid; exceptionally tough, stable, resistant to chemicals, and transparent; used as a binder, in sheet form, as an air-curing adhesive, and as the main ingredient in some caulks and sealants.
1. general term applied to a resinous material of the various esters of acrylic acid. It is used as a denture base material and also for trays and other dental restorations. n 2. An ethylene derivative that contains a vinyl group (e.g., polymethacrylate [methyl methacrylate], the principal ingredient of many plastics used in dentistry).
