spermatogenesis
[ spur-mat-uh-jen-uh-sis, spur-muh-tuh- ]
/ spɜrˌmæt əˈdʒɛn ə sɪs, ˌspɜr mə tə- /
noun Biology.
the origin and development of spermatozoa.
OTHER WORDS FROM spermatogenesis
sper·ma·to·ge·net·ic [spur-muh-toh-juh-net-ik, sper-mat-oh-] /ˌspɜr mə toʊ dʒəˈnɛt ɪk, spərˌmæt oʊ-/, adjectiveWords nearby spermatogenesis
spermato-,
spermatoblast,
spermatocele,
spermatocide,
spermatocyte,
spermatogenesis,
spermatogenous,
spermatogonium,
spermatoid,
spermatolysis,
spermatophore
Example sentences from the Web for spermatogenesis
Spermatogenesis of Caloptenus femur-rubrum and Cicada tibicen.
Studies in Spermatogenesis (Part 1 of 2) |Nettie Maria Stevens
British Dictionary definitions for spermatogenesis
spermatogenesis
/ (ˌspɜːmətəʊˈdʒɛnɪsɪs) /
noun
the formation and maturation of spermatozoa in the testis
See also spermatocyte (def. 1)
Derived forms of spermatogenesis
spermatogenetic (ˌspɜːmətəʊdʒəˈnɛtɪk), adjectiveMedical definitions for spermatogenesis
spermatogenesis
[ spər-măt′ə-jĕn′ĭ-sĭs, spûr′mə-tə- ]
n.
Formation and development of spermatozoa by meiosis and spermiogenesis.
spermatocytogenesis
Other words from spermatogenesis
sper•mat′o•ge•net′ic (-jə-nĕt′ĭk) null adj.Scientific definitions for spermatogenesis
spermatogenesis
[ spər-măt′ə-jĕn′ĭ-sĭs, spûr′mə-tə- ]
The formation and development of spermatozoa. Spermatogenesis in humans begins with the spermatogonium, the diploid cell that undergoes mitosis to form new spermatogonia as well as cells called primary spermatocytes. Each primary spermatocyte then undergoes the first meiotic division to produce two secondary spermatocytes. Each secondary spermatocyte undergoes the second meiotic division to produce two nonmotile cells called spermatids. The four spermatids then develop flagella and become sperm. Since some of the original spermatogonia replace themselves, the males are able to produce large numbers of sperm continuously after sexual maturity.