Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. Antĭŏchēnus, a, um, adj. [Antiochia], of or belonging to Antiochia: ager, Ven. Fort. 8, 5 fin.
2. Antĭŏchēnus, a, um, adj. [Antiochus], of or belonging to King Antiochus: pecunia, received from him, Gell. 4, 18; 7, 19 fin. (cf. 2. Antiochensis).