oceanography Syllabification: (o·cea·nog·ra·phy)Pronunciation: /ˌōSHəˈnägrəfē/Definition of oceanography noun the branch of science that deals with the physical and biological properties and phenomena of the sea. Derivatives oceanographerPronunciation: /-fər/ noun oceanographicPronunciation: /-nəˈgrafik/ adjective oceanographicalPronunciation: /-nəˈgrafəkəl/ adjective oceanography in other Oxford dictionaries Definition of oceanography in the British & World English dictionary