American English

Definition of proof verb from the Oxford Advanced American Dictionary



    Verb Forms present simple I / you / we / they proof
    he / she / it proofs
    past simple proofed
    -ing form proofing
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  1. 1proof something to put a special substance on something, especially cloth, to protect it against water, fire, etc. proofed canvas
  2. 2proof something to produce a test copy of a piece of printed work so that mistakes can be corrected color proofing
  3. Word Familyprove verb (disprove)proof nounproven adjective (unproven)
See the Oxford Advanced Learner's Dictionary entry: proof