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Definitions

theory

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


Example Sentences

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Marcus did his first postdoctoral research in Ottawa, but in 1949 he jumped at the chance to study theory — instead of hands-on, experimental chemistry — at the University of North Carolina.

From Los Angeles Times Jul. 17, 2026

Congress could, in theory, redesign it as a mandatory retirement savings program.

From MarketWatch Jul. 15, 2026

What remains is the boards that made those decisions and a duty-of-care theory that has never been tested in court because, until last month, no one needed to test it.

From The Wall Street Journal Jul. 14, 2026

In theory, McCullum is England's white-ball coach until his contract expires at the end of the 50-over World Cup in southern Africa in the autumn of 2027.

From BBC Jul. 14, 2026

But Gran didn’t tolerate ideas like evolution or the big bang theory, despite the evidence.

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

In plain language, that means he’s probably going to ramble late into the night about a bunch of baseless conspiracy theories.

From Slate Jul. 16, 2026

He has a well-documented history of trafficking in conspiracy theories himself, which made his ambiguous invocation of federal involvement a kind of implicit validation to conspiracy theorists that there might be more to the story.

From Salon Jul. 13, 2026

Not, of course, necessarily to the public’s benefit: Fake news and conspiracy theories, as Mr. Smil notes, can spread more rapidly than at any other time in human history.

From The Wall Street Journal Jul. 13, 2026

If certain theories are correct and the universe has no built in clock, how can events be placed in the correct order?

From Science Daily Jul. 9, 2026

A reporter crowed, “It has become a settled fact that Burr’s and the Buffalo doctors’ theories are the silliest humbugs of the day.”

From "American Spirits" by Barb Rosenstock




Vocabulary lists containing theory


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