doctrīna (noun F) : doctor
* Teaching, instruction (class.; cf.: litterae, artes, disciplina, praecepta, scientia, humanitas).
* Prop.: non aliqua mihi doctrina tradita, sed in rerum usu causisque tractata,Cic. de Or. 1, 48, 208; 1, 3, 11; id. Off. 44, 155: puerilis,id. de Or. 3, 31, 125; id. Mur. 30, 63; id. Sest. 56; Quint. 2, 8, 3; 6, 3, 12; 12, 2, 1 (in these passages of Quint. opp. natura; cf. also Hor. Ep. 1, 18, 100); id. 2, 12, 8; Hor. C. 4, 4, 33 et saep.
* Transf.
* Object., the knowledge imparted by teaching, i. e. science, erudition, learning: est unum perfugium doctrina ac litterae, quibus semper usi sumus,Cic. Fam. 6, 12 fin.; so with litterae,id. Rep. 2, 10; Quint. 11, 1, 89; cf. also: nonnulli litteris ac studiis doctrinae dediti,Cic. Balb. 1, 3; and with the latter cf. id. Rep. 1, 9 fin.; id. Or. 10, 34; id. Cael. 10, 24: malis studiis malisque doctrinis,id. Leg. 2, 15 fin.; cf. id. Rep. 1, 17 fin.: Piso Graecis doctrinis eruditus,id. Brut. 67, 236; cf. id. Arch. 7; id. N. D. 3, 9, 23; id. Q. Fr. 1, 1, 7 fin.; id. Rep. 1, 36; id. de Or. 3, 34, 139: ad domesticum morem adventiciam doctrinam adhibere,id. Rep. 3, 3: me omnis ars et doctrina liberalis et maxime philosophia delectavit,id. Fam. 4, 4, 4; cf. id. de Or. 3, 32, 127; id. Ac. 2, 1: dicendi,i. e. rhetoric,id. Part. 1, 3: auctor doctrinae ejus (sc. Numae),Liv. 1, 18: doctrina deos spernens,id. 10, 40 et saep.
* Subject., the habit produced by instruction, principle: mala studia malaeque doctrinae,Cic. Leg. 2, 15 fin.: neque id fecit naturā solum, sed etiam doctrinā,Nep. Att. 17, 3.

s. TLL