Ewing Ew·ing (y&oomacr;'ĭng), James. 1866-1943.
American pathologist. An authority on cancer, he established oncology as a clinical specialty.
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|