testis
noun
tes·tis
| \ ˈte-stəs
\
\
plural testes\ ˈte-ˌstēz
\
\
Definition of testis
: a typically paired male reproductive gland that produces sperm and secretes testosterone and that in most mammals is contained within the scrotum at sexual maturity
Examples of testis in a Sentence
Recent Examples on the Web
During a vasectomy, doctors cut or block the vas deferens, one of two tubes in the scrotum that carries sperm from the testes to the urethra, in two places. — Dara T. Mathis, SELF, "We Need to Stop Acting Like Vasectomies Are Heroic," 29 Aug. 2019 The testes, almost alone among the organs that have been tested, don’t seem to have a clock either. — Quanta Magazine, "How the Body’s Trillions of Clocks Keep Time," 15 Sep. 2015 Hormone-blocking treatment can include testes removal to reduce levels of testosterone, which fuels prostate cancer growth. — Lindsey Tanner, BostonGlobe.com, "Dementia tied to hormone-blocking prostate cancer treatment," 5 July 2019 Chemical castration, which is very different from surgical castration or removal of the testes, serves to block the production of certain hormones, including testosterone. — Laura Barcella, PEOPLE.com, "Child Sex Offenders Could Be ‘Chemically Castrated’ Under New Alabama Law," 5 June 2019 This also meant that testicondy evolved after afrotherians split from other placental mammals, about 100 million years ago, which suggests the common ancestor of all mammals did indeed lower their testes, Dr. Hiller said. — New York Times, "The Evolutionary Origin of Descending Testicles," 29 June 2018 Within a matter of days, the new female will also begin to undergo some pretty stark physical transformations, growing rapidly in size as her testes recede back into her body. — Katherine J. Wu, Smithsonian, "Alternatives to Heterosexual Pairings, Brought to You By Non-Human Animals," 28 June 2018 Some have the male chromosome but no testes, for example, and doctors can figure out the reason for these abnormalities in fewer than half of all cases. — Elizabeth Pennisi, Science | AAAS, "The little piece of DNA that makes girls boys," 14 June 2018 Injuries to Beckham and starting second baseman Jonathan Schoop have testes the Orioles’ infield depth, with the team starting three difference third baseman since Beckham went on the DL, Danny Valencia, Pedro Alvarez and Jace Peterson. — Eduardo A. Encina, baltimoresun.com, "Orioles claim third baseman Renato Nunez off waivers from Rangers," 13 May 2018These example sentences are selected automatically from various online news sources to reflect current usage of the word 'testis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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More Definitions for testis
testis
noun
tes·tis
| \ ˈte-stəs
\
\
plural testes\ ˈte-ˌstēz \
Kids Definition of testis
: a male reproductive gland that produces sperm
testis
noun
tes·tis
| \ ˈtes-təs
\
\
plural testes\ ˈtes-ˌtēz
\
\
Medical Definition of testis
: a typically paired male reproductive gland that usually consists largely of seminiferous tubules from the epithelium of which spermatozoa develop, that contains androgen-secreting Leydig cells in the interstitial tissue, that corresponds to the ovary of the female and in craniate vertebrates develops from the genital ridges of the embryo, and that in most mammals descends into the scrotum before the attainment of sexual maturity and in many cases before birth