Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Prŏmētheus (trisyl.), ĕi and ĕos, m., = Προμηθεύς (the Forethinker), a son of Iapetus and Clymene, brother of Epimetheus, and father of Deucalion. He formed men of clay, and animated them by means of fire brought from heaven; for which he was fastened to Caucasus, where a vulture, or, as some say, an eagle, fed upon his entrails, until, at last, it was slain by Hercules, Cic. Tusc. 3, 31, 76; Auct. Her. 4, 6, 9; Hor. C. 1, 16, 13; Ov. M. 1, 82; Hyg. Fab. 54; 144; Verg. E. 6, 42; Prop. 3, 3, 29 (4, 4, 7); Mart. 11, 85, 9; Stat. Th. 11, 478; Lact. 2, 10, 5.
Poet., transf., of a skilful potter, Juv. 4, 133.
Hence,