proving ground

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noun

any place, context, or area for testing something, as a piece of scientific equipment, a theory, etc.

Origin of proving ground

First recorded in 1940–45

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for proving ground

Historical Examples of proving ground

A proving-ground for guns, armor, etc., has been established there.
The Great Round World and What Is Going On In It, Vol. 1, No. 38, July 29, 1897
Various

British Dictionary definitions for proving ground

proving ground

noun

a place or situation in which something new, such as equipment or a theory, can be tested

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