Date: | 1200-1300 |

Language: | Old French |

Origin: | preuve, from Late Latin proba, from Latin probare; PROBE^{2} |

1## evidence

[uncountable and countable] facts, information, documents etc that prove something is true ** proof of purchase/ownership/identity** ** proof (that)** ** proof positive** (=definite proof that cannot be doubted) ** burden/onus of proof** law (=used to say who has to show that something is true or not in a legal case)

Do you have any proof of purchase? (=something to prove that you bought and paid for something)

Do you have any proof that this man stole your bag?

There is no proof that the document is authentic.

He's living proof (=his experience or life shows it is true) that footballers can still play at the highest level into their late thirties.

We received 800 applications last year, proof positive that the college is highly regarded by parents and students.

The burden of proof lies on the defendant.

2## copy

[countable usually plural] technicalTCN a copy of a piece of writing or a photograph that is checked carefully before the final printing is done :

Can you check these proofs?

3## mathematics

[countable]

a) HM a test in mathematics of whether a calculation is correct

b) HM a list of reasons that shows a theorem (=statement) in geometry to be true

4## the proof of the pudding (is in the eating)

used to say that you can only know whether something is good or bad after you have tried it

5## alcohol

[uncountable]DFD a measurement of the strength of some types of alcoholic drink, especially spirits :

70% proof vodka (=that contains 70% pure alcohol) British English

70 proof vodka (=that contains 35% pure alcohol) American English

Definition from the Longman Dictionary of Contemporary English

Advanced Learner's Dictionary.

Advanced Learner's Dictionary.