περιοδ-είαorπεριοδ-ία,ἡ,
A. going round, circuit, Str. 8.6.3 , 9.3.1 .
2. patrolling, rounds, Aen.Tact. 1.1 (pl.), al.
II. going througha subject,diligent study, Epicur. Ep. 1p.4U. : pl., ib. p.32 U.; π. φυσική
Phld. Rh. 2.53
S.
2. medicalpractice, routine,ἐν π. Gal. 17(1).518 ; κατὰ τὴν π. ἐν Ῥώμη
Id. 14.295
.