NOTE: This is the Professional Version. CONSUMERS: Click here for the Consumer Version. A bezoar is a tightly packed collection of partially digested or undigested material that is unable to exit the stomach. Gastric bezoars are usually rare and can occur in all age groups. They often occur in patients with behavior disorder or abnormal gastric emptying and also after gastric surgery.
verb (used without object), presided, presiding. 1. to occupy the place of authority or control, as in an assembly or meeting; act as president or chairperson. 2. to exercise management or control (usually followed by over): The lawyer presided over the estate. Origin of preside.
An incumbent is an official who holds an office. If you want to run for congress, you're going to have to beat the incumbent. Incumbent comes from the Latin word incumbens, which means lying in or leaning on, but came to mean holding a position. It was first used in English for someone holding a church office, and then someone holding any office. You'll most likely hear it today for political officials. In a race for mayor, the incumbent mayor faces a challenger. Incumbent also means obligation.