adrenal /æˈdɹiːnəl/adjective 3noun 1forms 3 adjective3 •Pertaining to the adrenal glands (suprarenal glands), their secretions, or the function derived therefrom.She seems to inhabit some fluid, crystalline medium. Pure adrenal dream. — 2003 •(informal) Full of excitement or adrenaline. •Abutting or near the kidneys. noun1 •An adrenal gland. formsadrenals · more adrenal · most adrenal