Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

Samŏsăta, ōrum, n., = τὰ Σαμόσατα, the capital of Commagene, on the western shore of the Euphrates, now Samosat, Plin. 2, 104, 108, § 235; 5, 24, 20, § 85; 5, 24, 21, § 86.
Also Samŏsăta, ae, f., Amm. 14, 8, 7; 18, 4, 7.
Hence, Sămŏsătēnus, a, um, of Samosata, a Samosatene: Paulus, Ambros. de Fide, 5, 8, § 105; Incarn. Dom. Sac. 2, § 8.