[goh-nad, gon-ad]
noun Anatomy.
a sex gland in which gametes are produced; an ovary or testis.

1875–80; < Neo-Latin gonad- (stem of gonas), equivalent to gon- gon- + -ad- -ad1

gonadal, gonadial [goh-ney-dee-uhl] , gonadic [goh-nad-ik] , adjective
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World English Dictionary
gonad (ˈɡɒnæd)
1.  an animal organ in which gametes are produced, such as a testis or an ovary
2.  slang a foolish or stupid person
[C19: from New Latin gonas, from Greek gonos seed]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

1880, coined from Gk. gone "seed, act of generation, race, family," from gignesthai "be born."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

gonad go·nad (gō'nād')
An organ that produces gametes, especially a testis or an ovary.

go·nad'al (gō-nād'l) or go·nad'ic adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
gonad   (gō'nād')  Pronunciation Key 
An organ in animals that produces reproductive cells (gametes). The ovary and testis are gonads.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary
gonads [(goh-nadz)]

The organs in animals that produce sex cells: ovaries in the female, testes in the male.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Britannica


in zoology, primary reproductive gland that produces reproductive cells (gametes). In males the gonads are called testes; the gonads in females are called ovaries. (see ovary; testis).

Learn more about gonads with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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