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Definitions

theory

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


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.

In theory, both methods should produce the same answer.

From Science Daily • Apr. 12, 2026

State wildlife officials have finally come up with a theory to explain where a giant, highly destructive rodent that’s been terrorizing California came from: Oregon.

From Los Angeles Times • Apr. 10, 2026

Looking at AAL’s monthly chart one can see how round number theory has come into play at the $10 figure:

From Barron's • Apr. 8, 2026

Combined, this gives you roughly $40,000 a year before taxes — but you don’t have those Big Apple expenses and, in theory, you will have more than $700,000 in five years’ time.

From MarketWatch • Apr. 8, 2026

It was like his brain shut down, rejecting her theory so completely.

From "Found" by Margaret Peterson Haddix




Vocabulary lists containing theory