Ăchāia or (in poets) Ăchāĭa (quadrisyl.), ae, f. Ἀχαία. The province of Achaia, in the northern part of the Peloponnesus, on the Gulf of Corinth, earlier called Aegialea (maritime country), Mel. 2, 3, 4; Plin. 4, 5, 6.—Hence, In gen. (cf. the Homeric Ἀχαιοί), for Greece, opposite to Troja: et quot Troja tulit, vetus et quot Achaia formas, Prop. 2, 21, 53; cf. Ov. M. 8, 268; id. Her. 17, 209 al.— After the destruction of Corinth by Mummius, B. C. 146, Greece proper became a Rom. prov. under the name of Achaia.— Hence, ăchāĭăs, ădis, adj., An Achaean or Greek woman, Ov. H. 3, 71.—ăchāĭ-cus, a, um, adj., Achaean, Grecian. Poet., opp. to Trojan: manus, Verg. A. 5, 623: ignis, Hor. C. 1, 15, 35.— Belonging to the Roman province Achaia: homines, Cic. Att. 1, 13, 1: negotium, id. Fam. 4, 4, 2: concilium, Liv. 43, 17, 4.—Hence L. Mummius obtained, for the destruction of Corinth and the complete subjugation of Greece, the honorary title of Achaïcus. Vell. 1, 13, 2; Plin. 35, 4, 8, § 24; and so as surname of one of his descendants: Mummia Achaica, Suet. Galb. 3.—ăchāĭs, ĭdis, adj., f. Achaean, Grecian: urbes, Ov. M. 5, 306.— Subst., = Achaia, Achaia, Greece, Ov. M. 5, 577; 7, 504.— ăchāĭus, a, um, adj.: Achaean, Grecian (poet. for Achaïcus and Achaeus): castra, Verg. A. 2, 462; so Sil. 14, 5; 15, 306.