| CHC | chromosome condensation; community health center; community health computing; community health counc... |
|---|---|
| CCRC | comprehensive care retirement community; continuing care retirement community |
| CHN | carbon, hydrogen, and nitrogen; child neurology; Chinese [hamster]; community health network; commun... |
| CHPA | community health planning agency; community health purchasing alliance |
| ANT | acoustic noise test; adenine nucleotide translocator; aminonitrothiazole; anterior |
| CNR | Contrast-to-Noise Ratio |
|---|---|
| C/N | Contrast-to-noise |
| C/N | Contrast-to-noise ratio |
| HNR | Harmonics-to-Noise Ratio |
| IRN | Iterated rippled noise |
| hearing loss, noise-induced | Hearing loss from exposure to noise. The loss is often in the frequency range 4000-6000 hertz. (12 Dec 1998) |
|---|---|
| signal-to-noise ratio | <microscopy> Also sometimes used as an abbreviation for serial number, can be somewhat confusing in the case of electronic equipment. (05 Aug 1998) |
| structured noise | In radiology, the signals from anatomic structures which interfere with the detection of significant pathology. (05 Mar 2000) |
| noise | 1. Sound of any kind. "The heavens turn about in a most rapid motion without noise to us perceived." (Bacon) Noise is either a sound of too short a duration to be determined, like the report of a cannon; or else it is a confused mixture of many discordant sounds, like the rolling of thunder or the noise of the waves. Nevertheless, the difference between sound and noise is by no means precise. 2. Especially, loud, confused, or senseless sound; clamor; din. 3. Loud or continuous talk; general talk or discussion; rumor; report. "The noise goes." "What noise have we had about transplantation of diseases and transfusion of blood!" (T. Baker) "Soerates lived in Athens during the great plague which has made so much noise in all ages." (Spectator) 4. Music, in general; a concert; also, a company of musicians; a band. "The king has his noise of gypsies." (B. Jonson) Synonym: Cry, outcry, clamor, din, clatter, uproar. Origin: F. Noise noisy strife, quarrel, brawl, fr. L. Nausea seasickness, sickness, disgust. See Nausea. Source: Websters Dictionary (01 Mar 1998) |
| noise-induced deafness | A type of sensorineural deafness caused by prolonged exposure to loud sounds, e.g., jet engines. (05 Mar 2000) |
| noise, occupational | Noise present in occupational, industrial, and factory situations. (12 Dec 1998) |
| noise, transportation | Noise associated with transportation, particularly aircraft and automobiles. (12 Dec 1998) |
| optical noise | <microscopy> Image defects that become especially conspicuous when the image is enhanced. In video microscopy, includes hot spots, mottle, uneven illumination, etc. (05 Aug 1998) |
| biotic community | <biology, zoology> An aggregation of different species of organisms living and interacting within the same habitat. A group of fossil species which are often found together in the same sites. (19 Jan 1998) |
| community | <biology> An association of living organisms having mutual relationships among themselves and to their environment and thus functioning, at least to some degree, as an ecological unit. (05 Jan 1998) |
| community-acquired infections | Any infection acquired in the community, that is, contrasted with those acquired in a health care facility (cross infection). An infection would be classified as community-acquired if the patient had not recently been in a health care facility or been in contact with someone who had been recently in a health care facility. (12 Dec 1998) |
| community dentistry | The practice of dentistry concerned with preventive as well as diagnostic and treatment programs in a circumscribed population. (12 Dec 1998) |
| community health aides | Persons trained to assist professional health personnel in communicating with residents in the community concerning needs and availability of health services. (12 Dec 1998) |
| community health centres | Facilities which administer the delivery of health care services to people living in a community or neighborhood. (12 Dec 1998) |
| community health nurse | A nurse who provides care to individuals or groups in a community outside of institutions. Usually works through the auspices of a state or city health department. Synonym: community health nurse, community nurse. (05 Mar 2000) |
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