PapuanPronunciation: /ˈpapʊən, ˈpapwən/Definition of Papuan noun 1a native or inhabitant of Papua, or of Papua New Guinea. 2 [mass noun] a heterogeneous group of around 750 languages spoken by some 3 million people in Papua New Guinea and neighbouring islands. adjective relating to Papua or its people or their languages. Papuan in other Oxford dictionaries Definition of Papuan in the US English dictionary