sper·mato·gen·e·sis
(ˌ)spər-ˌma-tə-ˈje-nə-səs 
: the process of male gamete formation including formation of a spermatocyte from a spermatogonium, meiotic division of the spermatocyte, and transformation of the four resulting spermatids into spermatozoa
sper·mato·ge·net·ic
(ˌ)spər¦matəjə̇¦netik,
¦spərmət-
variants
or spermatogenic
¦spərmətə¦jenik
(ˌ)spər¦mat-
: of, relating to, or constituting spermatogenesis
Examples of spermatogenesis in a Sentence
Recent Examples on the Web
Daryl Austin, USA Today, 2 May 2026
Scientists have been attempting to produce sperm outside the body, known as in vitro spermatogenesis, for almost a century.
—Emily Mullin, Wired News, 23 Apr. 2026
These contraceptive methods work by mimicking the body’s natural feedback loops to reduce spermatogenesis.
—Kenneth H. Mayer, STAT, 27 Feb. 2026
Contraceptives acting on spermatogenesis take a few weeks to kick in, and fertility takes a few weeks to return when a man stops using them.
—Ana Castelain, Bloomberg, 28 Jan. 2026
This condition is primarily caused by genetic defects that severely disrupt or halt the complex process of sperm production, known as spermatogenesis.
—Mrigakshi Dixit, Interesting Engineering, 13 Oct. 2025
The process took six months which amounted to two cycles of spermatogenesis — the cycle from initial sperm production to maturation— before his numbers were at ideal levels and on par with his husband, Brown.
—Mikelle Street, Them., 5 Aug. 2025
Effect of different types of textile fabric on spermatogenesis: an experimental study
National Institute of Environmental Health Sciences.
—Sara Novak, Discover Magazine, 7 June 2025
For example, Paterna Biosciences is developing technology to solve male infertility with in vitro spermatogenesis, by creating healthy sperm from a man's testicle stem cells in a lab.
—Aya Spencer, Forbes, 24 Sep. 2024
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Noun
This process, called spermatogenesis, begins at puberty and continues throughout a man’s life.
—Daryl Austin, USA Today, 2 May 2026
Scientists have been attempting to produce sperm outside the body, known as in vitro spermatogenesis, for almost a century.
—Emily Mullin, Wired News, 23 Apr. 2026
These contraceptive methods work by mimicking the body’s natural feedback loops to reduce spermatogenesis.
—Kenneth H. Mayer, STAT, 27 Feb. 2026
Contraceptives acting on spermatogenesis take a few weeks to kick in, and fertility takes a few weeks to return when a man stops using them.
—Ana Castelain, Bloomberg, 28 Jan. 2026
This condition is primarily caused by genetic defects that severely disrupt or halt the complex process of sperm production, known as spermatogenesis.
—Mrigakshi Dixit, Interesting Engineering, 13 Oct. 2025
The process took six months which amounted to two cycles of spermatogenesis — the cycle from initial sperm production to maturation— before his numbers were at ideal levels and on par with his husband, Brown.
—Mikelle Street, Them., 5 Aug. 2025
Effect of different types of textile fabric on spermatogenesis: an experimental study
National Institute of Environmental Health Sciences.
—Sara Novak, Discover Magazine, 7 June 2025
For example, Paterna Biosciences is developing technology to solve male infertility with in vitro spermatogenesis, by creating healthy sperm from a man's testicle stem cells in a lab.
—Aya Spencer, Forbes, 24 Sep. 2024
Cite this Entry
“Spermatogenesis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spermatogenesis. Accessed 14 Jun. 2026.
Copy CitationKids Definition
spermatogenesis
noun
sper·mato·gen·e·sis
(ˌ)spər-ˌmat-ə-ˈjen-ə-səs
plural spermatogeneses
-ə-ˌsēz
: the process of male gamete formation including meiosis and formation of sperm cells
Medical Definition
spermatogenesis
noun
sper·mato·gen·e·sis
(ˌ)spər-ˌmat-ə-ˈjen-ə-səs
plural spermatogeneses
-ˌsēz
: the process of male gamete formation including formation of a primary spermatocyte from a spermatogonium, meiotic division of the spermatocyte, and transformation of the four resulting spermatids into spermatozoa
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