pro·seu·che \prōˈs(y)ükē\noun orpro·seu·cha\-kə\ (pluralproseu·chae \-üˌkē\) Etymology: Latin & Greek; Latin proseucha, from Greek proseuchē proseuche, prayer, from proseuchesthai to pray to, from pros near, toward, to + euchesthai to pray — more at pros-, vow 1.: an ancient place of prayer : oratory 2.: an ancient synagogue