1. evidence or arguments that establish the truth or validity of something
2. test copies of printed material used for checking and correction before final printing
Usage: printing
3. logical demonstrations that show a mathematical statement is true
Usage: mathematics

Examples

• The detective gathered proofs of the suspect’s guilt.
• Scientists need solid proofs before accepting a new theory.
• The editor reviewed the proofs before sending the book to print.
• She checked the proofs carefully for any typos or errors.
• The geometry student struggled with writing mathematical proofs.
• The whiskey was bottled at 86 proofs.
• Legal proofs must meet strict standards in court.