| healthy worker effect | Phenomenon of workers' usually exhibiting overall death rates lower than those of the general population due to the fact that the severely ill and disabled are ordinarily excluded from employment. (12 Dec 1998) |
|---|---|
| Heaney | Noble Sproat, U.S. Gynecological surgeon and obstetrician, 1880-1955. See: Heaney's operation. (05 Mar 2000) |
| Heaney's operation | Technique for vaginal hysterectomy. (05 Mar 2000) |
| heap | 1. To collect in great quantity; to amass; to lay up; to accumulate; usually with up; as, to heap up treasures. "Though he heap up silver as the dust." (Job. Xxvii. 16) 2. To throw or lay in a heap; to make a heap of; to pile; as, to heap stones; often with up; as, to heap up earth; or with on; as, to heap on wood or coal. 3. To form or round into a heap, as in measuring; to fill (a measure) more than even full. Origin: AS. Heapian. Source: Websters Dictionary (01 Mar 1998) |
| hear | To perceive sounds; denoting the function of the ear. Origin: A.S. Heran (05 Mar 2000) |
| heariness | The quality of being hearty; as, the heartiness of a greeting. Source: Websters Dictionary (01 Mar 1998) |
| hearing | The sensation of sound. (12 Dec 1998) |
| hearing aid | An electronic amplifying device designed to bring sound more effectively into the ear; it consists of a microphone, amplifier, and receiver. (05 Mar 2000) |
| hearing aids | Devices which amplify sound to help persons with hearing loss. (12 Dec 1998) |
| hearing impaired persons | Persons with any degree of loss of hearing that has an impact on their activities of daily living or that requires special assistance or intervention. (12 Dec 1998) |
| hearing impairment | Hearing loss A reduction in the ability to perceive sound; may range from slight to complete deafness. See: deafness, threshold shift. (05 Mar 2000) |
| hearing level | The measure of the status of hearing as read directly on the hearing loss scale of an audiometer; described in decibels as a deviation from a standard value for zero on the audiometer. (05 Mar 2000) |
| hearing loss, bilateral | Partial hearing loss in both ears. (12 Dec 1998) |
| hearing loss, central | Hearing loss due to central nervous system disease, anywhere in the auditory pathways from the cochlear nucleus of the pons to the auditory cortex. (12 Dec 1998) |
| hearing loss, conductive | Hearing loss due to interference with the acoustic transmission of sound to the cochlea. The interference is in the outer or middle ear. (12 Dec 1998) |