1) Ductless gland 2) Endocrine 3) Endocrine gland 4) Of or relating to the gonads 
pertaining to a gonad.
<anatomy> Pertaining to a gonad. ... (18 Nov 1997) ... 
From gonad, which is part of the reproductive system that produces and releases eggs (ovary) or sperm (testicle/testis).
From gonad, which is part of the reproductive system that produces and releases eggs (ovary) or sperm (testicle/testis).
Type: Term Pronunciation: gō-nad′ăl Definitions: 1. Relating to a gonad.
[adj] - of or relating to the gonads
gonadal Relating to a gonad.
adjective of or relating to the gonads; `gonadal hormones`