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spermatocyte
spermatocyte n. 
/ˌspərˈmædəˌsaɪt/ a cell which gives rise to spermatids by meiosis; the primary spermatocyte gives rise in meiosis I to two secondary spermatocytes, which each give rise in meiosis II to two spermatids.
Brit. /ˈspəːmətə(ʊ)sʌɪt/
, /ˈspəːmətə(ʊ)sʌɪt/U.S. /ˈspərmədəˌsaɪt/
, /ˈspərmədəˌsaɪt//ˌspərˈmædəˌsaɪt/ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > sperm > sperm cell
spermatoon1852
spermatogonium1861
spermatocyte1886
spermatid1889
primary spermatocyte1896
spermogonium1913
1886 Encycl. Brit. XX. 412/2 One kind..divide into a mass or spermatogemma of small cells (spermatocytes).
1920 L. Doncaster Introd. Study Cytol. v. 61 After a number of divisions..the spermatogonia and oogonia cease to divide and begin to increase considerably in size. At this stage they are called primary spermatocytes..and oocytes.
1959 W. Andrew Textbk. Compar. Histol. xii. 490 [In fishes] spermatogenesis consists of the same general cytological stages as in the invertebrates: namely, spermatogonia, spermatocytes, spermatids, and spermatozoa.
1970 E. J. Ambrose & D. M. Easty Cell Biol. xii. 390 Only one ovum is formed from each oöcyte in contradistinction to the four sperm formed from each spermatocyte.
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