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spermatogonium
spermatogonium n. 
/ˌspərˌmædəˈɡoʊniəm/ (a) Botany (see quot. 1957); (b) Zoology a primordial male reproductive cell which undergoes mitosis and gives rise to primary spermatocytes.
Brit. /ˌspəːmətə(ʊ)ˈɡəʊnɪəm/
, /ˌspəːmətə(ʊ)ˈɡəʊnɪəm/U.S. /ˌspərmədəˈɡoʊniəm/
, /ˌspərmədəˈɡoʊniəm//ˌspərˌmædəˈɡoʊniəm/ΘΚΠ
the world > plants > part of plant > reproductive part(s) > spore or sporule > [noun] > type of > spermatium or spermogonium
spermatium1856
spermogone1856
spermogonium1857
spermagonium1861
spermatogonium1861
spermatophore1861
spermagone1876
the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > sperm > sperm cell
spermatoon1852
spermatogonium1861
spermatocyte1886
spermatid1889
primary spermatocyte1896
spermogonium1913
1861 R. Bentley Man. Bot. i. v. 385 The spermagonia or spermatogonia [in Lichens] were first discovered by Tulasne.
1886 Encycl. Brit. XX. 412/2 One kind, resembling young ovules, which he [Von La Valette St. George] terms primitive seminal cells or spermatogonia.
1957 W. H. Snell & E. A. Dick Gloss. Mycol. 144/2 Spermatogonium, the proper form for what is called ‘spermogonium’.., but seldom used.
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.
1968 R. Passmore & J. S. Robson Compan. Med. Stud. I. xxxvii. 27/2 Spermatogonia show little sign of activity until puberty when they begin to multiply rapidly.
1970 E. J. Ambrose & D. M. Easty Cell Biol. x. 330 In the female the oögonia, corresponding to spermatogonia, give rise to oöcytes.
1974 Sci. Amer. Sept. 56/3 In the course of spermatogenesis the two important objectives are reduction of the chromosome number from the diploid number (46) of the spermatogonium to the haploid number (23) of the spermatozoon and the preparation of the spermatozoon for its role in fertilization.
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