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.

Origin of spermatogenesis

From New Latin, dating back to 1880–85; see origin at spermato-, -genesis

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-/, adjective

Words nearby spermatogenesis

spermato-, spermatoblast, spermatocele, spermatocide, spermatocyte, spermatogenesis, spermatogenous, spermatogonium, spermatoid, spermatolysis, spermatophore

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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 testisSee also spermatocyte (def. 1)

Derived forms of spermatogenesis

spermatogenetic (ˌspɜːmətəʊdʒəˈnɛtɪk), adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical 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.

单词	spermatogenesis
释义	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. Origin of spermatogenesis From New Latin, dating back to 1880–85; see origin at spermato-, -genesis 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-/, adjective Words nearby spermatogenesis spermato-, spermatoblast, spermatocele, spermatocide, spermatocyte, spermatogenesis, spermatogenous, spermatogonium, spermatoid, spermatolysis, spermatophore Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 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 testisSee also spermatocyte (def. 1) Derived forms of spermatogenesis spermatogenetic (ˌspɜːmətəʊdʒəˈnɛtɪk), adjective Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical 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. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. 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. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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