I.num. distr. adj. [tres], three each, three.
I. Lit.: “ipse cum tribus legionibus circum Samorabrivam trinis hibernis hiemare constituit,” Caes. B. G. 5, 53: “trina sacrificia in die,” Suet. Ner. 56: “castra,” Caes. B. G. 7, 46; Liv. 9, 43, 6: “litterae,” Cic. Att. 11, 17, 1; cf. Varr. L. L. 10, § 67 Müll.—
II. Transf., threefold, triple, = triplex: “trinis catenis vinctus,” Caes. B. G. 1, 53: “subsidia, Auct. B. Alex. 37, 3: soles,” Plin. 2, 31, 31, § 99: “lunae,” id. ib.: “nomina,” Ov. F. 6, 216: “trina bella civilia, plura externa,” Tac. H. 1, 2: “miles Vitellianus trinis et ipse praesidiis occurrit,” id. ib. 3, 82: “capita (Cerberi),” Sen. Herc. Fur. 783.—
B. Sing.: trīnus , a, um, adj., three, triple, three each: “cantus trino conficitur versu,” Plin. 10, 35, 52, § 106: “trino relicto praesidio, Auct. B. Afr. 80, 2: forum,” Stat. S. 4, 9, 15: “genus interdictorum,” Aus. Idyll. 11, 63; 11, 66.—
2. Mostly in phrase, trinum nundinum, the time of three nundinae or market-days; v. nundinus, III.—By the lex Caecilia et Didia, B. C. 98, that a promulgatio trinum nundinum, or a putting up in public for at least seventeen days, should be made of any proposed law before taking a vote on it, Cic. Dom. 16, 41; id. Phil. 5, 3, 8.