[tes-ti-kuh l]

Origin of testicle

First recorded in 1375–1425; late Middle English word from Latin word testiculus. See testis, -cle1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for testicle

genitalia, nuts, gonads, vulva, testes, stones, pudenda, ballocks, balls, cullions, rocks

British Dictionary definitions for testicle


  1. either of the two male reproductive glands, in most mammals enclosed within the scrotum, that produce spermatozoa and the hormone testosteroneAlso called: testis
Derived Formstesticular (tɛˈstɪkjʊlə), adjective

Word Origin for testicle

C15: from Latin testiculus, diminutive of testis testicle
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

Word Origin and History for testicle

1590s, alteration of testicule (early 15c.), from Latin testiculus, diminutive of testis "testicle" (see testis). The Old English was herþan, probably originally "leather bag" (cf. heorþa "deer-skin"). The commonest slang terms for them in other languages are words that mean "balls," "stones," "nuts," "eggs."

Online Etymology Dictionary, © 2010 Douglas Harper

testicle in Medicine


  1. A testis, especially one contained within the scrotum.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

testicle in Science


  1. Either of the testes of a male mammal together with the scrotum that contains it.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.