Word a Day
proof
What does proof mean?
proof (noun): any factual evidence that helps to establish the truth of something.
Definition: Princeton WordNet 3.1.
How do you pronounce proof?
/pɹuf/ (IPA, American English). The app reads every word aloud.
Where does proof come from?
From Middle English proof, from Old French prove, from Late Latin proba (“a proof”), from Latin probō (“to prove”); see prove; compare also the doublet probe.
Etymology: Wiktionary, CC BY-SA 4.0.
Test yourself: do you know “proof”?
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What does “proof” mean?
the weather in some location averaged over some long period of time
Not quite: that's what climate means.
(biology) the basic structural and functional unit of all organisms
Not quite: that's what cell means.
any factual evidence that helps to establish the truth of something
Right! That's what “proof” means.
a mercantile establishment for the retail sale of goods or services
Not quite: that's what store means.
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