Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. cūrĭo, ōnis, m. [curia].
2. Cūrĭo, ōnis, m., a surname in the gens Scribonia; v. Scribonius; hence, Cū-rĭōnĭānus, a, um, adj., of or pertaining to Curio, Auct. B. Afr. 52 fin.
‡ cūrĭōnĭus, a, um, adj. [1. curio, I.], of or pertaining to the priest of a curia: curionium aes dicebatur quod dabatur curioni ob sacerdotium curionatus, Paul. ex Fest. p. 49, 19 Müll.: curionia sacra, quae in curiis fiebant, id. ib. p. 62, 11.