;(logic or mathematics) a formal series of statements showing that if one thing is true something else necessarily follows from it ;any factual evidence that helps to establish the truth of something
- "This is a proof that the angles in a triangle equal 180 degrees"
- "There is no proof that this actually occurred"
- "if you have any proof for what you say, now is the time to produce it"
a measure of alcoholic strength expressed as an integer twice the percentage of alcohol present (by volume)
- normalstyrka [ dryck ]
make resistant, as to water, sound, errors, etc.
activate by mixing with water and sometimes sugar or milk
- "proof yeast"