Lewis & Short

cŏmĭtĭālis, e, adj. [comitium, II.], of or pertaining to the comitia: dies, on which the comitia were held, Cic. Q. Fr. 2, 2, 3; 2, 13, 3; Varr. L. L. 6, § 29 Müll.; Liv. 3, 11, 3; cf. Paul. ex Fest. p. 38, 12 Müll.; Macr. S. 1, 16; so, biduum, Caes. B. C. 1, 5: mensis, Cic. Verr. 2, 2, 52, § 130: homines, who were always at the comitia, and sold their votes, Plaut. Poen. 3, 2, 6: morbus, the epilepsy (so called because its occurrence on the day of the comitia, as ominous, broke up the consultation; cf. Fest. s. v. prohibere, p. 234, 28 Müll.; Cels. 2, 1; 3, 23; also called morbus major and sacer, id. 2, 8: vitio corripi, Sen. Ira, 3, 10, 3; and, subst.: cŏmĭtĭālis, is, comm., one who has the epilepsy, Plin. 20, 11, 44, § 114; 28, 7, 23, § 83; 32, 4, 14, § 33 sq.; 32, 9, 37, § 112.
Adv.: cŏmĭtĭālĭter, epileptically, by epilepsy, Plin. 22, 21, 29, § 59.