- the arbitrary standard strength, as of an alcoholic liquor.
- strength with reference to this standard: “100 proof” signifies a proof spirit, usually 50% alcohol.
- a trial impression, as of composed type, taken to correct errors and make alterations.
- one of a number of early and superior impressions taken before the printing of the ordinary issue: to pull a proof.
- to test the effectiveness of (yeast), as by combining with warm water so that a bubbling action occurs.
- to cause (especially bread dough) to rise due to the addition of baker's yeast or other leavening.
Origin of proof
synonym study for proof
historical usage of proof
OTHER WORDS FROM proofre-proof, verb (used with object)un·proofed, adjective
Other definitions for proof (2 of 2)
How to use proof in a sentence
Park employees helped John quit tobacco by way of a butts-proof glass enclosure, a drastic change in diet, and regular exercise.Zebra Finches, Dolphins, Elephants, and More Animals Under the Influence|Bill Schulz|December 31, 2014|DAILY BEAST
Although often this is considered proof positive of guilt at trial, it is not an uncommon occurrence in false confessions.How the U.S. Justice System Screws Prisoners with Disabilities|Elizabeth Picciuto|December 16, 2014|DAILY BEAST
And if you want proof of what the country is really all about, just walk through the National September 11 Memorial Museum.
They're also proof that no matter how fancy you are, you can't escape the urge to watch two girls make out.High-End Pervs Film Benedict Cumberbatch and Reese Witherspoon Sucking Face|Amy Zimmerman|December 11, 2014|DAILY BEAST
Without proof of this kind, the story of the lost legions is just a legend.
Here convincing proof was given of Mme. Mesdag's accuracy, originality of interpretation, and her skill in the use of color.Women in the fine arts, from the Seventh Century B.C. to the Twentieth Century A.D.|Clara Erskine Clement
Proof was given to him, of Elizabeth having admitted Ripperda to private political discussions in the Altheim apartments.
Wasn't the dead man stretched in the shadow convincing proof of their capacity for pure devilishness?Raw Gold|Bertrand W. Sinclair
For my part, I scarcely know what to say; inasmuch as I do not care either to affirm or deny a thing of which I have no proof.
If I am proof against my own heart, in so dear a cause, shall I not be proof against the poor allurements of vanity and sense?
British Dictionary definitions for proof (1 of 2)
- the alcoholic strength of proof spirit
- the strength of a beverage or other alcoholic liquor as measured on a scale in which the strength of proof spirit is 100 degrees