osteocyte Syllabification: (os·te·o·cyte)Pronunciation: /ˈästēəˌsīt/Definition of osteocyte noun Physiology a bone cell, formed when an osteoblast becomes embedded in the matrix it has secreted. Derivatives osteocyticPronunciation: /ˌästēəˈsitik/ adjective osteocyte in other Oxford dictionaries Definition of osteocyte in the British & World English dictionary