Noun | 1. | ![]() gland, secreter, secretor, secretory organ - any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream endocrine system - the system of glands that produce endocrine secretions that help to control bodily metabolic activity thyroid, thyroid gland - located near the base of the neck parathyroid, parathyroid gland - any one of four endocrine glands situated above or within the thyroid gland adrenal, adrenal gland, suprarenal gland - either of a pair of complex endocrine glands situated near the kidney prostate, prostate gland - a firm partly muscular chestnut sized gland in males at the neck of the urethra; produces a viscid secretion that is the fluid part of semen thymus gland, thymus - a ductless glandular organ at the base of the neck that produces lymphocytes and aids in producing immunity; atrophies with age hypophysis, pituitary, pituitary body, pituitary gland - the master gland of the endocrine system; located at the base of the brain adenohypophysis, anterior pituitary, anterior pituitary gland - the anterior lobe of the pituitary body; primarily glandular in nature pars anterior, pars distilis - the anterior part of the anterior pituitary pars intermedia - a thin piece of tissue that has become part of the posterior pituitary neurohypophysis, pars nervosa, posterior pituitary, posterior pituitary gland - the posterior lobe of the pituitary body; primarily glandular in nature epiphysis cerebri, pineal body, pineal gland, epiphysis - a small endocrine gland in the brain; situated beneath the back part of the corpus callosum; secretes melatonin islands of Langerhans, isles of Langerhans, islets of Langerhans - cell clusters in the pancreas that form the endocrine part of that organ; secrete insulin and other hormones adrenal cortex - the cortex of the adrenal gland; secretes corticosterone and sex hormones adrenal medulla - the medulla of the adrenal gland; secretes epinephrine corpus luteum - yellow endocrine tissue that forms in a ruptured Graafian follicle following the release of an ovum; it degenerates after a few days unless pregnancy has begun |