quindĕcimvir (plur. in inscrr. usually X͞V. VIRI, but also written in full, QVINDECIM VIRO SACRIS FACIVNDIS, Inscr. Grut. 476, 7, of A. D. 346), vĭri (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.: quindĕcimvĭri, gen. ūm and ōrum, the college or board of fifteen men, the fifteen. So esp.,
I 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. —
II Quindecimviri agris dandis, fifteen commissioners for apportioning lands , Plin. 7, 43, 45, § 139.