quindecimvir (plur. in inscrr. usually X[dibreve]V. VIRI, but also written in full, QVINDECIM VIRO SACRIS FACIVNDIS, Inscr. Grut. 476, 7, of A. D. 346), viri (separated, quindecim Diana preces virorum, Hor. C. S. 70), m.
quindecim-vir, a member of a college, commission, or board of fifteen men for any official function.
— Usually in plur.: quindecimviri, gen. ūm and ōrum, the college or board of fifteen men, the fifteen. So esp., In Rome, the quindecimviri Sibyllini or sacris faciundis, a college of priests who had charge of the Sibylline books, from which, in times of danger, they divined the means of averting the peril by religious rites, Hor. l. l.; Tac. A. 6, 12 fin.; Inscr. Orell. 1100; 2263 sq.; 2351.
— Gen. plur.: quindecimvirum, Tac. l. l.: quindecemvirum conlegi magister, Plin. 28, 2, 3, § 12.
—Sing.: L. Cotta quindecimvir sententiam dicturus, Suet. Caes. 79; Tac. A. 6, 12, 1: quindecimvir sacris faciundis, Gell. 1, 12.
— Quindecimviri agris dandis, fifteen commissioners for apportioning lands, Plin. 7, 43, 45, § 139.