Biochemistry. any of a group of corticosteroid hormones, synthesized by the adrenal cortex, that regulate the excretion or reabsorption of sodium and potassium by the kidneys, salivary glands, and sweat glands.
Pharmacology. any of various natural or synthetic drugs having mineralocorticoid activity.
mineralocorticoid min·er·al·o·cor·ti·coid (mĭn'ər-ə-lō-kôr'tĭ-koid') n. Any of a group of steroid hormones that are secreted by the adrenal cortex and regulate the balance of water and electrolytes in the body.