📖theory

noun
/ˈθiːəri/

Meaning

An explanation of an idea or principle based on facts, reasoning, and evidence.
a supposition or system of ideas intended to explain something

Example Sentences

Einstein's theory of relativity changed the way we understand physics.

Einstein's theory of relativity revolutionized physics.

Example Expressions

in theory

Synonyms

hypothesis, concept, idea, principle, doctrine
Entry 1
hypothesis, concept, idea, principle, doctrine
Entry 2
hypothesis, principle, concept, doctrine

Antonyms

fact, reality, practice, certainty
Entry 1
fact, reality, practice
Entry 2
practice, fact, reality, certainty

Collocations

scientific theory, political theory, in theory, theory of evolution, economic theory, conspiracy theory
Entry 1
scientific theory, political theory, in theory, theory of evolution
Entry 2
scientific theory, economic theory, political theory, conspiracy theory

More Example Sentences

I see this theory a bit differently.

They prefer to learn with examples rather than read long theory.

Can you say something about the practical application of this theory?

While this policy is good in theory, there are many problems in its implementation.

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