Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Antĭŏchēus or -īus, a, um, adj., = Ἀντιόχειος, of or pertaining to the philosopher Antiochus: ista Antiochea contemnit, Cic. Ac. 2, 36, 115; id. Att. 13, 19.