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 Lobito Corridor mega-project linking three African countries is shifting from blueprint to proving ground in the global race for critical minerals.

From Barron's • May 7, 2026

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

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