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Pyrex

[pahy-reks] /ˈpaɪ rɛks/
Trademark.
1.
a brand name for any of a class of heat- and chemical-resistant glassware products of varying composition used for cooking.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for Pyrex

Pyrex

/ˈpaɪrɛks/
noun
1.
trademark
  1. any of a variety of borosilicate glasses that have low coefficients of expansion, making them suitable for heat-resistant glassware used in cookery and chemical apparatus
  2. (as modifier): a Pyrex dish
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for Pyrex
n.

1915, proprietary name (Corning Glass Works, Corning, N.Y.), arbitrary coinage, in which eager etymologists see implications of Greek pyr "fire" and perhaps Latin rex "king;" but the prosaic inventors say it was based on pie (n.1), because pie dishes were among the first products made from it. The -r- is purely euphonious.

Online Etymology Dictionary, © 2010 Douglas Harper
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