astrocyte Syllabification: (as·tro·cyte)Pronunciation: /ˈastrəˌsīt/Definition of astrocyte noun Anatomy a star-shaped glial cell of the central nervous system. Derivatives astrocyticPronunciation: /ˌastrəˈsitik/ adjective astrocyte in other Oxford dictionaries Definition of astrocyte in the British & World English dictionary