oneiromancy UK /əˈnaɪɹəˌmænsi/US /oʊˈnaɪɹoʊˌmæn(t)si/ noun3 •Divination by the interpretation of dreams.The absence of oneiromancy among the divinatory techniques is justified by the fact that it occupies in Islam a higher place than that of divination in the sphere of religious inspiration. — 1979 •The interpretation of dreams. •An act of such divination or dream-interpretation. formsoneiromancies