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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

personify
personnel
perspective
perspex
perspiration
perspire
persuadable

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'.

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Perspex. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/perspex
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