Perspex is a trade name for polymethyl methacrylate, a clear acrylic glass, originally sold under the name of Plexiglas.
An example of Perspex is the material used in place of glass wherever strength is needed, such as to hold water in an aquarium tank.
a hard, transparent plastic, an acrylic resin similar to Plexiglas
[p-] this plastic
From the proprietary name Perspex
- (trademark) Plexiglas