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Definition of pyrex

pyrex

/ˈpaɪ.rɛks/
py · rex
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pyrex Lexical Profile

pyrex Game Scores & Validity

• noun

1

A hard, heat-resistant type of glass typically used for ovenware and laboratory equipment.

Example

"The chemistry students used pyrex beakers to safely boil the acidic solutions over the Bunsen burners."

Synonyms
View all synonyms for pyrex

Word Nuance & Usage

Originally a trademarked brand name (Pyrex), the word is frequently used generically in lowercase to refer to any heat-resistant glass used for baking or laboratory work.

• Rhymes for pyrex

• Nearby Words

pyramid
pyrenees
pyrethrum
pyrex
pyrite
pyrite falls
pyrola

Word Origin & Etymology

Coined in 1915 by Corning Glass Works. Though often assumed to derive from the Greek 'pyr' (fire), it was actually formed from 'pie' (the first product was a pie dish) and the suffix '-ex' taken from a previous glass product, Nonex.

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Pyrex. In Wordmom Dictionary. Retrieved Oct 22, 2026, from https://wordmom.com/dictionary/pyrex
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