proving ground

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.

The mine was restarted as a proving ground for Rio Tinto’s RIO 2.74%increase; green up pointing triangle new method of unlocking low-grade copper deposits.

From The Wall Street Journal • Jan. 15, 2026

The 1988 protests were a proving ground for activists, some still challenging military rule today.

From Barron's • Dec. 23, 2025

But, the thinking went, there is a perfect proving ground conveniently circling the Earth, never more than about three days’ travel time away.

From Slate • Dec. 9, 2025

The most artistically vibrant theaters in Los Angeles and beyond are a proving ground for actors, where even stars such as Tom Hanks and Annette Bening turn up on stage.

From Los Angeles Times • Oct. 25, 2025

One proving ground only opened onto the next.

From "Becoming" by Michelle Obama