|the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).|
|a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells.|
cholecystokinin cho·le·cys·to·ki·nin (kō'lĭ-sĭs'tə-kī'nĭn)
A polypeptide hormone produced principally by the small intestine in response to the presence of fats, causing contraction of the gallbladder, release of bile, and secretion of pancreatic digestive enzymes. Also called pancreozymin.