Pyrex

American

[pahy-reks] / ˈpaɪ rɛks /

Trademark.

a brand name for any of a class of heat- and chemical-resistant glassware products of varying composition used for cooking.

Pyrex British

/ ˈpaɪrɛks /

noun

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In “Last Rites,” the house of the beset Smurl family comes instantly to life with its worn furniture, Pyrex casserole pans and stretched cord of its wall phone.

From Los Angeles Times • Sep. 16, 2025

"It took us two series to work out that we probably should be using Pyrex bowls so people could see what we were putting in them," laughs Si.

From BBC • Dec. 6, 2024

Pyrex, on the other hand, sells glass containers.

From Slate • Sep. 23, 2024

The maker of Pyrex glassware and Instant Pot has filed for Chapter 11 bankruptcy protection as the company that was already struggling is stung by inflation, with Americans pulling back on spending.

From Seattle Times • Jun. 13, 2023

I'd get back and my tea'd be waiting under a Pyrex dish.

From "Black Swan Green" by David Mitchell

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023