spermatogenesis
noun
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
Examples of spermatogenesis in a Sentence
Recent Examples on the Web
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
Yu says microplastics could physically disrupt spermatogenesis, mess with the barrier between the testicles, or be a vehicle for harmful chemicals.
—Will Stone, NPR, 22 May 2024
The team at Stamford has previously determined the role of homeodomain-interacting protein kinase 4 (HIPK4) in the later stages of spermatogenesis, and it is thought that a drug targeting this kinase could be used as a contraceptive.
—Hannah Flynn, Ars Technica, 28 Feb. 2018
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
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
Yu says microplastics could physically disrupt spermatogenesis, mess with the barrier between the testicles, or be a vehicle for harmful chemicals.
—Will Stone, NPR, 22 May 2024
The team at Stamford has previously determined the role of homeodomain-interacting protein kinase 4 (HIPK4) in the later stages of spermatogenesis, and it is thought that a drug targeting this kinase could be used as a contraceptive.
—Hannah Flynn, Ars Technica, 28 Feb. 2018
Cite this Entry
“Spermatogenesis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spermatogenesis. Accessed 27 Mar. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
