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Pyrex.

A brand of glassware produced by the Corning corporation, capable of resisting high temperatures, and suitable for cooking applications, currently made with tempered glass.

5 characters2 syllables approx.English language

Meaning & usage

name

  1. A brand of glassware produced by the Corning corporation, capable of resisting high temperatures, and suitable for cooking applications, currently made with tempered glass.

  2. A brand of glassware produced by Corning using borosilicate glass.

    historical
Where this word comes from

From pie + r + -ex. First manufactured by the Corning Glassware Factory in 1915. * 1957, Letter from the Corning Glassware Factory: *: "We had a number of prior trademarks ending in the letters ex. One of the first commercial products to be sold under the new mark was a pie plate, and in the interests of euphonism the letter "r" was inserted between pie and ex, and the whole thing condensed to pyrex." * By surface analysis, the name also suggests pyr- (“fire”) + rex (“king”), thus connoting superior performance at high temperatures; in this regard, compare also the name of a major competing brand, Fire-King.

noun

  1. Alternative form of pyrex.

    alt-of · alternative · uncountable
Where this word comes from

From pie + r + -ex. First manufactured by the Corning Glassware Factory in 1915. * 1957, Letter from the Corning Glassware Factory: *: "We had a number of prior trademarks ending in the letters ex. One of the first commercial products to be sold under the new mark was a pie plate, and in the interests of euphonism the letter "r" was inserted between pie and ex, and the whole thing condensed to pyrex." * By surface analysis, the name also suggests pyr- (“fire”) + rex (“king”), thus connoting superior performance at high temperatures; in this regard, compare also the name of a major competing brand, Fire-King.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.