PATHOLOGY

Detailed explanation-1: -Definitions of narrowing. a decrease in width. Antonyms: broadening, widening. an increase in width. type of: decrease, decrement.

Detailed explanation-2: -(biology) a narrowing or constriction of a vessel or canal; especially a congenital narrowing of the aorta. taper. the property possessed by a shape that narrows toward a point (as a wedge or cone) bottleneck, chokepoint, constriction. a narrowing that reduces the flow through a channel.

Detailed explanation-3: -narrowing your topic will help you identify more specific concepts and keywords. Your search results will be more focused. Just as you did when you chose your keywords, identify each of the major concepts in your topic. For each concept, make a list of specific examples or types.