From Longman Dictionary of Contemporary Englishpositive proof/evidence/identification etcpositive proof/evidence/identification etcPROVEproof etc that shows that there is no doubt that something is trueThe witness made a positive identification. →positive
Examples from the Corpus
positive proof/evidence/identification etc• After setting up the frequency, make sure of positive identification. 2.• Check the call-sign twice for positive identification.• I was hoping for a positive identification.• The fact that attempts are made to restore it is positive proof.• Just when these walls were later added remains a vexing question as so little positive evidence has even now been recovered.• However, the issue is settled by positive evidence not by ingeniousexplanation of the failure to confirm the idea.• A clearer viewexists of what services are not than of any positive identification of their characteristics.• They look for positive evidence that the business is soundly based and a good lendingrisk.