1880, from Modern Latin gonas (plural gonades), coined from Greek gone, gonos "child, offspring; seed, that which engenders; birth, childbirth; race, stock, family," related to gignesthai "be born," genos "race, birth, descent," from PIE *gon-o-, suffixed form of root *gene- "give birth, beget." Related: gonads; gonadal.
<a href="https://www.etymonline.com/word/nad">Etymology of nad by etymonline</a>
Harper, D. (n.d.). Etymology of nad. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/nad