dŭŏ-dĕcĭmus, a, um, ord. num., the twelfth (a common word in Caes.): legio, Caes. B. G. 2, 23, 4; 2, 25, 1; 3, 1, 1; 7, 62, 4; id. B. C. 3, 34, 3. Adv.: dŭŏdĕcĭmo, for the twelfth time: consul, Capitol. Anton. Pius, 1, § 8.