Word Of The Day

Dorland's Word of the Day is a great way to broaden your knowledge of medical terminology. With a new and interesting term brought to you from the 32nd edition of Dorland's Illustrated Medical Dictionary each day, it's an easy and fun way to increase your medical vocabulary!

You can view a new word on this website each day.

Today's Word

controlled ovarian hyperstimulation

a method of assisted reproductive technology consisting of carefully monitored administration of agents designed to induce ovulation by a greater number of ovarian follicles and thus increase the probability of an ovum being fertilized. Called also controlled ovarian stimulation.

Word of the Day Archive

lipoid adrenal hyperplasia

an autosomal recessive disorder of steroidogenesis in which deficiency of cholesterol monooxygenase (side-chain-cleaving) causes a type of congenital adrenal hyperplasia (type I). The disorder is characterized by accumulation of lipids and cholesterol in the adrenal cortex, decreased or absent steroid hormones, severe salt wasting, sexual infantilism, and male pseudohermaphroditism; the adrenal insufficiency is usually lethal. Called also cholesterol desmolase deficiency.

intravascular papillary endothelial hyperplasia

a benign vascular tumor usually occurring as a solitary nodule of the head, neck, or finger; it is characterized by papillary lobules of proliferating endothelial cells with an underlying fibrous stroma, and often resembles angiosarcoma.

benign prostatic hyperplasia (BPH)

age-associated enlargement of the prostate resulting from proliferation of both glandular and stromal elements, beginning generally in the fifth decade of life; it may cause urethral compression and obstruction. Called also benign prostatic hypertrophy and nodular hyperplasia of the prostate.

hypercalcemia of malignancy

abnormal elevation of serum calcium associated with malignant tumors, resulting from osteolysis caused by bone metastases or by the action of circulating osteoclast-activating factors. released from tumor cells.

Bradbury-Eggleston syndrome

a syndrome of postural hypotension without tachycardia but with visual disturbances, hypohidrosis, impotence, lowered basal metabolic rate, dizziness, syncope, presyncope, and slow unchanging pulse. It occurs predominantly in older males in the early morning hours during the summer and is due to impaired peripheral vasoconstriction; it usually has a progressive course.

parathyroid hormone

a polypeptide hormone (84 amino acid residues) secreted by the parathyroid glands. It promotes release of calcium from bone to extracellular fluid by activating osteoclasts and inhibiting osteoblasts, indirectly promotes increased intestinal absorption of calcium, promotes renal tubular reabsorption of calcium and increased renal excretion of phosphates, and is a major regulator of bone metabolism. Secretion of parathyroid hormone increases when the level of calcium in the extracellular fluid is low. Its action is opposed by that of calcitonin. Called also parathormone and parathyrin.

tension-free hernioplasty

hernia repair reinforcing the defect with a mesh sheet or plug, thus avoiding the tension caused by suturing together structures not normally in apposition.