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Definition of perspex

perspex

/ˈpɜːr.spɛks/
per · spex
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perspex Lexical Profile

perspex Game Scores & Validity

• noun

1

A tough, lightweight, and transparent solid thermoplastic material (polymethyl methacrylate) that is frequently used as a shatter-resistant alternative to glass.

Example

"The museum protected the fragile ancient manuscripts by placing them in a custom-built perspex display case."

Synonyms
View all synonyms for perspex

Word Nuance & Usage

While originally a registered trademark, the term is widely used generically in British and Commonwealth English to refer to acrylic sheet glass; North American speakers typically use 'Plexiglas' for the same material.

• Nearby Words

persian buttercup
persicaria
persimmon
perspex
perth
peru
peruvian daffodil

Word Origin & Etymology

Coined in the 1930s as a trademark by the British company ICI. It is derived from the Latin verb 'perspicere', meaning 'to look through'.

Cite this Entry

Wordmom. (2026). Definition of Perspex. In Wordmom Dictionary. Retrieved Oct 15, 2026, from https://wordmom.com/dictionary/perspex
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