spermatocytePronunciation: /ˈspəːmətə(ʊ)sʌɪt, spəˈmat-/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 US English dictionary