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

From the first notes of its new single “Specter” — a brooding vocal workout for Sebastian that ended on pulverizing riffs — Bad Omens used cutting-edge tools and underground influence to elicit arena-rock catharsis.

From Los Angeles Times • Mar. 27, 2026

Kennedy had ordered the resumption of underground testing of H-bombs in September, and he wanted a better understanding of the dangers of fallout.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin