roseatePronunciation: /ˈrəʊzɪət/Definition of roseate adjective rose-coloured:the early, roseate light used in names of birds with partly pink plumage, e.g. roseate tern. Origin: late Middle English: from Latin roseus 'rosy' (from rosa 'rose') + -ate2roseate in other Oxford dictionaries Definition of roseate in the US English dictionary