hy·po·gonad·ism \ˌ ̷ ̷ ̷ ̷+ˈgōˌnaˌdizəm or ˈgäˌn-\noun (-s) Etymology: International Scientific Vocabulary hypo- + gonad + -ism 1.: functional incompetence of the gonads especially in the male with subnormal or impaired production of both hormonal and reproductive elements 2.: an abnormal state involving gonadal incompetence : eunuchoidism