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.

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P. Oxy. 29, one of the oldest surviving fragments of Euclid 's Elements, a textbook used for millennia to teach proof-writing techniques. The diagram accompanies Book II, Proposition 5. …

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.

evidence, proof - Evidence—from Latin e-, "out," and videre, "to see"— is information that helps form a conclusion; proof is factual information that verifies a conclusion.

Nov 1, 2025 · (countable, logic, mathematics) A sequence of statements consisting of axioms, assumptions, statements already demonstrated in another proof, and statements that logically …

to treat or coat for the purpose of rendering resistant to deterioration, damage, etc. (often used in combination): to proof a house against termites; to shrink-proof a shirt.

proof, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

Proof definition: The evidence or argument that compels the mind to accept an assertion as true.

Proof definition: evidence sufficient to establish a thing as true, or to produce belief in its truth.. See examples of PROOF used in a sentence.