Sudanian adjective 2noun 1forms 1 adjective2 •Of, from, or pertaining to the climatic region of the Sudan region, which lies just south of the Sahel in Africa. •(no longer used) Pertaining to the Sudanic languages.The language of Yarriba has no affinity to either of the Sudanian idioms. — 1837 noun1 •A Sudanese person. formsSudanians