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