Pyrex Definition

pīrĕks
proper name
A heat-resistant borosilicate glassware used for cooking, lab work, etc.
Webster's New World
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noun
Such glassware.
Webster's New World
A trademark for any of various types of heat-resistant and chemical-resistant glass.
American Heritage

A borosilicate glass with a low coefficient of thermal expansion; used for heat-resistant glassware in cooking and chemistry.

Wiktionary
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Origin of Pyrex

  • First manufactured by the Corning Glasswear Factory in 1915. See quote below.

    From Wiktionary

  • See Pyrex

    From Wiktionary

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