underground

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.

Geothermal energy systems require electronics that can function deep underground, where surrounding rock can glow red-hot.

From Science Daily • Apr. 7, 2026

Then it would need to be mechanically excavated from deep underground in the middle of hostile territory and could weigh 1,000 pounds.

From Salon • Apr. 3, 2026

Kone does much of its research underground in Lohja, Finland, in a facility sunk deep into a working limestone mine that lets engineers test travel distances of more than three football fields.

From The Wall Street Journal • Apr. 2, 2026

By the end of the pilot, we reveal they are underground.

From Los Angeles Times • Mar. 30, 2026

"Worms have an excellent sense of direction. They're used to finding their way underground, where they can't see."

From "All About Sam" by Lois Lowry