noun 
1. 
proof  (printing) an impression made to check for errors 


printing,
impression the business of producing printed material for sale or distribution



printing process,
printing the business of producing printed material for sale or distribution



galley proof a proof taken before the type is broken up to print pages



foundry proof a proof taken from a form before duplicate plates are made

2. 
proof  a formal series of statements showing that if one thing is true something else necessarily follows from it 


argument,
statement a variable in a logical or mathematical expression whose value determines the dependent variable; if f(x)=y, x is the independent variable



logic reasoned and reasonable judgment; "it made a certain kind of logic"



math,
mathematics,
maths a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement



mathematical proof proof of a mathematical theorem



logical proof proof of a logical theorem



monstrance,
demonstration (Roman Catholic Church) a vessel (usually of gold or silver) in which the consecrated Host is exposed for adoration

3. 
proof  any factual evidence that helps to establish the truth of something; "if you have any proof for what you say, now is the time to produce it" 


evidence,
grounds your basis for belief or disbelief; knowledge on which to base belief; "the evidence that smoking causes lung cancer is very compelling"



substantiation,
verification,
confirmation,
check (law) an affidavit attached to a statement confirming the truth of that statement



validation,
establishment the act of validating; finding or testing the truth of something

4. 
proof  a trial photographic print from a negative 


photographic print,
print a printed picture produced from a photographic negative

5. 
proof  a measure of alcoholic strength expressed as an integer twice the percentage of alcohol present (by volume) 


quantity,
amount,
measure an adequate or large amount; "he had a quantity of ammunition"

verb 
1. 
proof  make resistant (to harm); "proof the materials against shrinking in the dryer" 


strengthen gain strength; "His body strengthened"



bombproof make safe against bombings



bulletproof make bulletproof; "bulletproof the car"



childproof,
childproof make safe against children; "childproof the apartment"



foolproof,
goofproof,
goofproof proof against human misuse or error; "foolproof this appliance"



fireproof make resistant to fire



weatherproof make resistant to bad weather

2. 
proof  make or take a proof of, such as a photographic negative, an etching, or typeset 


create,
produce,
make create by artistic means; "create a poem"; "Schoenberg created twelvetone music"; "Picasso created Cubism"; "Auden made verses"

3. 
proof  activate by mixing with water and sometimes sugar or milk; "proof yeast" 


modify,
alter,
change make less severe or harsh or extreme; "please modify this letter to make it more polite"; "he modified his views on samegender marriage"

4. 
proof  knead to reach proper lightness; "proof dough" 


knead,
work make uniform; "knead dough"; "work the clay until it is soft"
