spermatocyte Syllabification: (sper·mat·o·cyte)Pronunciation: /spərˈmatəˌsīt/Definition of spermatocyte noun Biology a cell produced at the second stage in the formation of spermatozoa, formed from a spermatogonium and dividing by meiosis into spermatids. spermatocyte in other Oxford dictionaries Definition of spermatocyte in the British & World English dictionary