adrenal gland n.
Either of two small, dissimilarly shaped endocrine glands, one located above each kidney, consisting of the cortex, which secretes several steroid hormones, and the medulla, which secretes epinephrine. Also called epinephros, paranephros, suprarenal gland.
Two small glands, one located near the upper part of each kidney, that function in the endocrine system. Part of each adrenal gland secretes adrenaline; another part secretes other important hormones.