pituitary gland n.
A small, oval endocrine gland attached to the base of the vertebrate brain and consisting of an anterior and a posterior lobe, the secretions of which control the other endocrine glands and influence growth, metabolism, and maturation. Also called hypophysis, master gland.
adenohypophysis ad·e·no·hy·poph·y·sis (ād'n-ō-hī-pŏf'ĭ-sĭs)
The anterior glandular lobe of the pituitary gland, consisting of distal, intermediate, and infundibular parts, and secreting many hormones, including gonadotropin, prolactin, and somatotropin. Also called anterior lobe of hypophysis.