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Definition of Proof


  1. Any effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial.
  2. That degree of evidence which convinces the mind of any truth or fact, and produces belief; a test by facts or arguments that induce, or tend to induce, certainty of the judgment; conclusive evidence; demonstration.
  3. The quality or state of having been proved or tried; firmness or hardness that resists impression, or does not yield to force; impenetrability of physical bodies.
  4. Firmness of mind; stability not to be shaken.
  5. A trial impression, as from type, taken for correction or examination; -- called also proof sheet.
  6. A process for testing the accuracy of an operation performed. Cf. Prove, v. t., 5.
  7. Armor of excellent or tried quality, and deemed impenetrable; properly, armor of proof.
  8. Used in proving or testing; as, a proof load, or proof charge.
  9. Firm or successful in resisting; as, proof against harm; waterproof; bombproof.
  10. Being of a certain standard as to strength; -- said of alcoholic liquors.

Proof Quotations

Wine is constant proof that God loves us and loves to see us happy.
Benjamin Franklin

The best proof of love is trust.
Joyce Brothers

Achievement of your happiness is the only moral purpose of your life, and that happiness, not pain or mindless self-indulgence, is the proof of your moral integrity, since it is the proof and the result of your loyalty to the achievement of your values.
Ayn Rand

Faith is a knowledge within the heart, beyond the reach of proof.
Khalil Gibran

That some achieve great success, is proof to all that others can achieve it as well.
Abraham Lincoln
More "Proof" Quotations

Proof Translations

proof in Afrikaans is bewys
proof in Danish is bevis
proof in Dutch is drukproef
proof in French is preuve, argument
proof in German is Beweis
proof in Italian is percento, dimostrazione
proof in Latin is testimonium, argumentum
proof in Portuguese is prova
proof in Spanish is probanza
proof in Swedish is prov, bevis, korrektur

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