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proof stress

American

noun

the load per unit area that a structure can withstand without being permanently deformed by more than a specified amount.

proof stress British

noun

engineering the equivalent of yield stress in materials which have no clearly defined yield point

"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

Etymology

Origin of proof stress

First recorded in 1860–65

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