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noun
1.
evidence sufficient to establish a thing as true, or to produce belief in its truth.
2.
anything serving as such evidence: What proof do you have?
3.
the act of testing or making trial of anything; test; trial: to put a thing to the proof.
4.
the establishment of the truth of anything; demonstration.
5.
EXPANDLaw. (in judicial proceedings) evidence having probative weight.
6.
the effect of evidence in convincing the mind.
7.
an arithmetical operation serving to check the correctness of a calculation.
8.
Mathematics, Logic. a sequence of steps, statements, or demonstrations that leads to a valid conclusion.
9.
a test to determine the quality, durability, etc., of materials used in manufacture.
10.
Distilling.
a.
the arbitrary standard strength, as of an alcoholic liquor.
b.
strength with reference to this standard: “100 proof” signifies a proof spirit, usually 50% alcohol.
11.
Photography. a trial print from a negative.
12.
Printing.
a.
a trial impression, as of composed type, taken to correct errors and make alterations.
b.
one of a number of early and superior impressions taken before the printing of the ordinary issue: to pull a proof.
13.
(in printmaking) an impression taken from a plate or the like to show the quality or condition of work during the process of execution; a print pulled for examination while working on a plate, block, stone, etc.
14.
Numismatics. one of a limited number of coins of a new issue struck from polished dies on a blank having a polished or matte surface.
15.
the state of having been tested and approved.
16.
proved strength, as of armor.
17.
COLLAPSEScots Law. the trial of a case by a judge alone, without a jury.
adjective
18.
able to withstand; successful in not being overcome: proof against temptation.
19.
impenetrable, impervious, or invulnerable: proof against outside temperature changes.
20.
used for testing or proving; serving as proof.
21.
of standard strength, as an alcoholic liquor.
22.
EXPANDof tested or proven strength or quality: proof armor.
23.
COLLAPSEnoting pieces of pure gold and silver that the U.S. assay and mint offices use as standards.
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Proofs
is always a great word to know.
So is slumgullion. Does it mean:
| a chattering or flighty, light-headed person. |
| a stew of meat, vegetables, potatoes, etc. |
verb (used with object)
24.
to test; examine for flaws, errors, etc.; check against a standard or standards.
25.
Printing. prove (def. 7).
26.
to proofread.
27.
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.
28.
Cookery.
a.
to test the effectiveness of (yeast), as by combining with warm water so that a bubbling action occurs.
b.
to cause (especially bread dough) to rise due to the addition of baker's yeast or other leavening.
Origin:
1175–1225; Middle English prove, prooff, prof, proufe, alteration (by association with the vowel of prove) of preove, proeve, prieve, pref < Middle French preve, proeve, prueve < Late Latin proba a test, akin to Latin probāre to test and find good; compare pree
1175–1225; Middle English prove, prooff, prof, proufe, alteration (by association with the vowel of prove) of preove, proeve, prieve, pref < Middle French preve, proeve, prueve < Late Latin proba a test, akin to Latin probāre to test and find good; compare pree
Related forms
re-proof, verb (used with object)
un·proofed, adjective
Synonyms
1. confirmation, demonstration, corroboration, support. See evidence. 3. examination, assay. 18. firm, steadfast.
1. confirmation, demonstration, corroboration, support. See evidence. 3. examination, assay. 18. firm, steadfast.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source
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Link To proofs
Etymonline
Word Origin & History
proof
early 13c., preove "evidence to establish the fact of (something)," from O.Fr. prueve (early 13c.), from L.L. proba "a proof," a back-formation from L. probare "to prove" (see prove). Meaning "act of testing or making trial of anything" is from late 14c. Sense of "tested power"
EXPANDled to fireproof (early 17c.), waterproof (1736), foolproof (1902), etc. Meaning "standard of strength of distilled liquor" is from 1705. Typographical sense of "trial impression to test type" is from c.1600; proofreader first attested 1832. Numismatic sense of "coin struck to test a die" is from 1762; now mostly in ref. to coins struck from highly polished dies, mainly for collectors.
COLLAPSE
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
proof  (pr f) Pronunciation Key
A demonstration of the truth of a mathematical or logical statement, based on axioms and theorems derived from those axioms. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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