any of the glands of the endocrine system that secrete hormones directly into the bloodstream

of or relating to the gonads

lacking gonads

of or relating to the gonads

(vertebrates) one of usually two organs that produce ova and secrete estrogen and progesterone

hermaphroditic gonad that contains both testicular and ovarian tissue

one of the two male reproductive glands that produce spermatozoa and secrete androgens