a heat-resistant borosilicate glassware used for cooking, lab work, etc.
2. [occas. p-]
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by
Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'Pyrex'
arbitrary coinage < pie1
(with implication of Gr pyr
+ L rex
, king), arbitrary suffix of manufactured products