Ibibio Syllabification: (I·bi·bi·o)Pronunciation: /iˈbibēō, ibəˈbēō/Definition of Ibibio noun (plural same or Ibibios) 1a member of a people of southern Nigeria. 2the Benue-Congo language of the Ibibio, closely related to Efik. adjective relating to the Ibibio or their language. Origin:the name in IbibioIbibio in other Oxford dictionaries Definition of Ibibio in the British & World English dictionary