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pyrex

noun

No English definition recorded for this entry.

L25004 on Wikidata ↗

Wiktionary

name

Etymology: 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." * The name also connotes the fire of pyro-.

  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.

noun

Etymology: Genericized trademark from Pyrex.

  1. A kind of heat-resistant borosilicate glass, made by mixing a high concentration of boron oxides into the molten glass to reduce its thermal expansion coefficient.

    This steel tube slips into the pyrex glass focus tube, which is jacketed by a vacuum

    There is half of a yesteryear's tin of baked beans in a pyrex bowl

  2. Any borosilicate glass.
  3. Any glass capable of withstanding high temperatures, such as tempered glass suitable for cooking.