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The meaning of PROOF is the cogency of evidence that compels acceptance by the mind of a truth or a fact. How to use proof in a sentence.

PROOF definition: 1. a fact or piece of information that shows that something exists or is true: 2. a logical…. Learn more.

In the majority of cases, prove is a verb, while proof is a noun. There are rare exceptions to this rule, but they should be avoided in formal writing.

Definition of proof noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Proof is a fact, argument, or piece of evidence which shows that something is definitely true or definitely exists. This is not necessarily proof that he is wrong. Economists have been …

A proof is a logical or mathematical demonstration confirming the validity of a proposition, statement, or theory by presenting a structured set of reasons or evidence.

Proof theory, a branch of mathematical logic that represents proofs as formal mathematical objects Statistical proof, demonstration of degree of certainty for a hypothesis

Jun 22, 2025 · proof (countable and uncountable, plural proofs) (countable) An effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial.

PROOF meaning: 1 : something which shows that something else is true or correct often + of; 2 : an act or process of showing that something is true