Bithynia, A realme in Afia, whiche nowe the Turke hath. On the North it hath the sea called Ponticum: on the South, Mysia, and Phrygia: it was called also Bebrytia, and Mygdonia.
Lewis and Short: Latin dictionary
Bīthnĭa, ae, f., = *biquni/a, a very fruitful province in Asia Minor, between the Propontis and the Black Sea, where the Romans carried on a considerable trade (its inhabitants were, acc. to Herod. 7, 75, Thracians, who had wandered there), now Ejalet Anadoli, Cic. Verr. 2, 5, 11, 27; id. Agr. 2, 18, 40; id. Imp. Pomp. 2, 5; id. Fam. 13, 9, 1; 12, 13, 3; Plin. 5, 32, 43, 148; Tac. A. 1, 74; 16, 18; Flor. 3, 5, 6 and 12; Claud. in Eutr. 2, 247; Vulg. Act. 16, 7.—II. Derivv. A. Bīthnĭcus, a, um, adj., Bithynian, of Bithynia: societas, Cic. Fam. 13, 9, 2: civitates, Plin. Ep. 10, 115: Nicomedes, Flor. 3, 5, 3: Volusius, Juv. 15, 1.—Also an agnomen of Q. Pompeius, as conqueror of Bithynia, Fest. s. v. rutrum, p. 223; Cic. Brut. 68, 240.—And of the son of the same, Cic. Fam. 6, 16; 6, 17; 16, 23, 1.—B. Bīthnĭus, a, um, adj., Bithynian: Diophanes, Col. 1, 1, 10.—And in plur.: Bīthnĭi, ōrum, m., the inhabitants of Bithynia, Plin. 7, 16, 15, 69.—C. Bīth-nus (once Bithnus, Juv. 7, 15 Jahn), a, um, adj., Bithynian: carina, Hor. C. 1, 35, 7: mare, Tac. A. 2, 60: tyrannus, Juv. 10, 162: equites, id. 7, 15: caseus, Plin. 11, 42, 97, 241: negotia, Hor. Ep. 1, 6, 33.—And in plur.: Bīthni, ōrum, m., = *biqunoi/, the inhabitants of Bithynia, Mel. 1, 2, 6; 1, 19, 1; 2, 7, 2; Plin. 5, 32, 41, 145; 5, 32, 43, 150; Tac. A. 12, 22; 14, 46; Claud. in Eutr. 1, 201; 2, 239 and 467.—D. Bīth-nis, ĭdis, f., = *biquni/s. 1.A Bithynian woman, Ov. Am. 3, 6, 25.—2.A town on the island Thynias, in the Pontus Euxinus, Mel. 2, 7, 2.—3.An otherwise unknown town in Thrace, Mel. 2, 2, 6.—E. Bīth-nĭon, ii, n., = *biqu/nion, a town in Bithynia, afterwards called Claudiopolis, Plin. 5, 32, 43, 149.