Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: AstronomyUranusU‧ra‧nus /ˈjʊərənəs, jʊˈreɪnəs $ ˈjʊr-, jʊˈreɪ-/ noun HAthe planet that is seventh in order from the Sun William Herschel discovered Uranus in 1781. ldoceonline.com