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testes

American  
[tes-teez] / ˈtɛs tiz /

plural noun

Anatomy, Zoology.

  1. plural of testis; the male gonads or reproductive glands located in the scrotum.

testes British  
/ ˈtɛstiːz /

noun

  1. the plural of testis

"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
testes Cultural  

  1. sing. testis (tes-tis) The two organs in the male reproductive system that produce sperm and testosterone. The testes are housed in the scrotum.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Some can be born with external female genitalia but functioning testes, and are often certified as female at birth and raised as such.

From BBC • Aug. 31, 2025

In the brain, sexual differentiation starts before birth and results from a combination of sex chromosomes in brain tissue, sex hormones produced by the testes or ovaries and the environment.

From Salon • Apr. 22, 2025

Researchers found high levels of microplastics in human and dog testes.

From Los Angeles Times • May 23, 2024

Over the past couple of decades researchers have found that long-distance signaling goes beyond a few glands and organs—the pancreas, thyroid, testes, and ovaries—that spill out familiar hormones such as insulin and testosterone.

From Science Magazine • May 22, 2024

I read about hyperadrenocorticism and feminizing testes and something called cryptorchidism, which applied to me.

From "Middlesex: A Novel" by Jeffrey Eugenides

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.