- 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. 2018
Examples from the Web for proving ground
A proving-ground for guns, armor, etc., has been established there.
- a place or situation in which something new, such as equipment or a theory, can be tested