ascertain Copy link Outline I. To make certainII. To obtain certain knowledge1. compĕrĭo, pĕri, pertum, 42. rĕpĕrĭo, 4 • ascertain: I. To make certain: v. to define, prove. II. To obtain certain knowledge: 1. compĕrĭo, pĕri, pertum, 4: they a.'d that a bridge was being made, pontem fieri compererunt, Caes.: he had a.'d this from sure informants, id certis auctoribus compererat, Cic. (A stronger expression is compertum habere; which denotes the possession of well-grounded knowledge: as, I have a.'d that words do not make men brave, compertum habeo verba virtutem non addere, Sall.) 2. rĕpĕrĭo, 4: Pythagoras is a.'d to have come to Sybaris, Sybarim Pythagoras venisse reperitur, Cic.: Caes.: v. to learn.