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 brings network-based verification and live experts together to power millions of identity-assured interactions annually. It’s the industry’s most robust identity network. The Proof℠ platform provides …

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

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.

"Proof", the excellent play by David Auburn, was one of the best things in the New York stage in recent memory. Part of the attraction was the intelligent subject matter, math science, and how it connected …

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

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.

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 concerned with …

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

Jan 14, 2026 · 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.