co·mi·ti·a 
(kə-mĭshē-ə, -mĭshə)
(kə-mĭshē-ə, -mĭshə)n. pl. comitia
A popular assembly in ancient Rome having legislative or electoral duties.
[Latin, from pl. of comitium, assembly place : com-, com- + itus, past participle of īre, to go; see ei- in the Appendix of Indo-European roots.]
co·mitial (-mĭshəl) adj.