tertĭānus — Lewis & Short
tertĭānus, a, um, adj.id.,
I of or belonging to the third, tertian.
I Adj.:
tertianae febres,i.e. the tertian fever, Cic. N. D. 3, 10, 24.—
II Substt.
A tertĭāna, ae, f. (sc. febris), the tertian fever, Cels. 3, 5; Petr. 17; Plin. 24, 19, 107, § 170:
tertianis et quartanis remedium,id. 21, 23, 94, § 166; 22, 25, 72, § 150.—
B tertĭāni, ōrum, m. (sc. milites), soldiers of the third legion, Tac. A. 13, 38; id. H. 3, 24.