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Definitions

theory

[thee-uh-ree, theer-ee] / ˈθi ə ri, ˈθɪər i /


Example Sentences

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Evolutionary theory is no longer heretical, Galileo has been issued a hall pass to heaven, and quite a few sincere if entirely inadequate apologies have been issued, mostly to people long dead.

From Salon • Apr. 5, 2026

"By combining theory with our experimental ability to precisely control surface terminations, we open a new path toward MXenes with improved stability and tailored functional properties," concludes Ghorbani-Asl.

From Science Daily • Apr. 4, 2026

Suppliers like Sphere have growth rates that “in theory should be faster, and are faster, than the launch companies,” Khodjamirian told MarketWatch, adding that their “risk levels are lower” than rocket makers.

From MarketWatch • Apr. 3, 2026

Queer theory applies this approach to sexuality by framing sexual identity as a site of resistance.

From The Wall Street Journal • Apr. 2, 2026

I held up my finger, ready to poke holes in her theory.

From "Sir Fig Newton and the Science of Persistence" by Sonja Thomas