I.a public teacher, professor, one who makes instruction in any branch a business (post-Aug.): sapientiae professores, Cels. praef. init.: “ceterarum artium,” Quint. 12, 11, 20: “Latinae simul Graecaeque eloquentiae,” Suet. Rhet 5; id. Gram. 9: “astrologiae,” Col. 1, 1, 4; 11, 1, 12: “juris civilis,” Dig. 50, 13, 1.— Absol.: “opus etiam consummatis professoribus difficile,” Quint. 1, 9, 3: “circa scholas professorum,” Suet. Tib. 11.—
II. Transf., in gen., a professor, teacher: veritatis, Amm 30, 5, 9; “22, 4, 1: adulandi professores jam docti,” id. 17, 11, 1: “non obscurus professor atque auctor,” Quint. 2, 15, 36; cf. Plin. Ep. 4, 11, 2; Spart. Hadr 15; Dig. 50, 13, 6.—Of a physician, Cels. 2, 6, 1; 6, 4; cf. Cod. 10, 52.