proof

US /pruːf/
UK /pruːf/
"proof" picture
1.

evidence or argument establishing a fact or the truth of a statement

:
Do you have any proof that he was involved?
The police found no proof of his guilt.
2.

a trial impression of a page or other matter, taken from type or a plate, for the detection and correction of errors

:
The editor sent the author the page proofs for review.
Please check the proof carefully for any errors before printing.
1.

demonstrate the truth or existence of (something) by evidence or argument

:
Can you proof your claims with data?
The new findings proof the previous theory.
2.

make (something) resistant to damage or penetration by something

:
You should proof the fabric against water.
The new coating will proof the metal from corrosion.
1.

resistant to damage or penetration by something

:
This material is completely water-proof.
The safe is fire-proof.