Dictionary.com
definitions

gonad

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

Origin of gonad

1875–80; < New Latin gonad- (stem of gonas), equivalent to gon- gon- + -ad- -ad1
Related formsgo·nad·al, go·na·di·al [goh-ney-dee-uh l] /goʊˈneɪ di əl/, go·nad·ic [goh-nad-ik] /goʊˈnæd ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for gonadal

gonad

noun
  1. an animal organ in which gametes are produced, such as a testis or an ovary
  2. slang a foolish or stupid person
Derived Formsgonadal, gonadial (ɡɒˈneɪdɪəl) or gonadic, adjective

Word Origin for gonad

C19: from New Latin gonas, from Greek gonos seed
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 gonadal

gonad

n.

1880, from Modern Latin gonas (plural gonades), coined from Greek gone, gonos "seed, act of generation, race, family," from gignesthai "be born," related to genos "race, birth, descent" (see genus). Related: gonads.

Online Etymology Dictionary, © 2010 Douglas Harper
gonadal in Medicine

gonad

[gō′năd′]
n.
  1. An organ that produces gametes, especially a testis or an ovary.
Related formsgo•nad′al (gō-năd′l) null adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
gonadal in Science

gonad

[gō′năd′]
  1. An organ in animals that produces reproductive cells (gametes). The ovary and testis are gonads.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.