Gallaudet, Thomas Hopkins - The first American educator to support the use of Sign Language to educate Deaf children.

Gallaudet University- The only liberal arts university in the world for the Deaf, located in Washington, D.C. Gallaudet is considered to be the center of the American Deaf Community.

Gestational Age- A child's age calculated to correct for premature birth.

Gestural Language- Languages which use specific, agreed upon gestures to communicate. They are complete languages with grammar and syntax.

Gesture- A movement of the arm, hand, body or face to convey meaning.

Handicap- An older term which has been replace by the term Disability.

Hard of Hearing- The currently accepted term to describe those with mild to severe hearing loss.

Hearing Aid- An electronic device used to amplify sounds.

Hearing Handicap Inventory- A measure of the impact of a hearing loss.

Hearing Impaired- An older term for describing a person with hearing loss. Many people consider this term to be negative because it emphasizes the impairment, rather than the person.

Hearing Instrument- Another term for hearing aid.

Hearing Loss- A reduction in sensitivity, discrimination or processing of environmental sounds and speech.

Hearing- The sense of gaining information using the ear. Also used to describe people with normal hearing.

Hertz- The unit for measuring frequency.