Theory

Meaning

a supposition or system of ideas intended to explain something

An explanation of an idea or principle based on facts, reasoning, and evidence.

Example Sentences

Einstein's theory of relativity revolutionized physics.

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

Example Expressions

in theory

Synonyms

hypothesis, principle, concept, doctrine, idea

Entry 1

hypothesis, principle, concept, doctrine

Entry 2

hypothesis, concept, idea, principle, doctrine

Antonyms

practice, fact, reality, certainty

Entry 1

practice, fact, reality, certainty

Entry 2

fact, reality, practice

Collocations

scientific theory, economic theory, political theory, conspiracy theory, in theory, theory of evolution

Entry 1

scientific theory, economic theory, political theory, conspiracy theory

Entry 2

scientific theory, political theory, in theory, theory of evolution