The loss or impairment of hearing caused by disease or a defect in the auditory system of the brain.
A Look At American Sign LanguageWhat is ASL or American Sign Language? American Sign Language, or ASL, is the visual signing language used by the Deaf community in the United States. English speakers in Canada and in a handful of other counties use ASL, too. Interestingly, those countries include the Philippines, Singapore, Jamaica, China, Chad, the Democratic Republic of the Congo, Cambodia, and Bolivia—a varied group. There are other sign languages …
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.