1 [with object] demonstrate the truth or existence of (something) by evidence or argument:the concept is difficult to prove (as adjective proven)a proven ability to work hard (US prove something up) Law establish the genuineness and validity of (a will). 2 [with object and complement] demonstrate to be the specified thing by evidence or argument:if they are proved guilty we won’t trade with them [no object, with complement] be seen or found to be:the scheme has proved a great success
) demonstrate one’s abilities or courage: she displayed an ingenuousness which sprung from a yearning need to prove herself
[with object] rare test the accuracy of (a mathematical calculation). [with object] subject (a gun) to a testing process: firearms proved for black powder should not be used with smokeless ammunition
3 [no object] (of bread dough) become aerated by the action of yeast; rise.