Lewis Short
(v. a.P. a.) : per-nosco, ōvi, ōtum, 3, v. a.
* To examine thoroughly: pernoscite, Furtumne factum existimetis, an, etc.,Ter. Ad. prol. 12.—Hence, in perf., to have examined or discerned, to know thoroughly, to become thoroughly acquainted with, to get a correct knowledge of: ingenium avidi haud pernoram hospitis,Plaut. Bacch. 2, 3, 42: facta pernovit probe,id. Aul. 3, 5, 29: pernovi equidem ingenium tuum ingenuom admodum,id. Trin. 3, 2, 39.
* To learn thoroughly, become fully acquainted with: hominum mores ex corpore, oculis, vultu, etc., pernoscere,Cic. Fat. 5, 10: motus animorum sunt penitus oratori pernoscendi,id. de Or. 1, 5, 17.—Hence, pernōtus, a, um, P. a., thoroughly known, well known: pugil ob eximiam virtutem virium regi pernotus et gratus,Curt. 9, 7, 16; Mel. 2, 3; Min. Fel. Oct. 14, 4.
Charlton T. Lewis, Charles Short, A Latin Dictionary