| SSD | shaded surface display; single saturating dose; Social Security disability; source-skin distance; so... |
|---|---|
| A2 P2 | aortic second sound; pulmonary second sound |
| BS | Bachelor of Science; Bachelor of Surgery; Bacillus subtilis; Bartter syndrome; base strap; bedside; ... |
| bs | bedside; bowel sound; breath sound |
| CSO | claims services only; common source outbreak; craniostenosis; craniosynostosis; ostium of coronary s... |
| BESA | Brain electric source analysis |
|---|---|
| CSD | Current Source Density |
| MSI | Magnetic Source Imaging |
| PSD | Post Source Decay |
| s | source |
| carbon source | Any carbon-containing organic molecule (carbohydrate, aminoacid) that an organism can use to produce energy in the form of ATP. (09 Oct 1997) |
|---|---|
| major source | A source that emits, or has the potential to emit, a pollutant regulated under the Clean Air act in excess of a specified rate in a nonattainment area. (05 Dec 1998) |
| common-source epidemic | <microbiology> An epidemic resulting from infection of a large number of people from a single contaminated source. (09 Oct 1997) |
| point source | In photometry, a very small source of light which is regarded as a geometrical point from which light emanates in straight lines in all directions. (05 Mar 2000) |
| power source | Devices that supply energy. (12 Dec 1998) |
| source emission reduction plan | (SERP) A contingency plan developed to reduce emissions during an air quality emergency. (05 Dec 1998) |
| anvil sound | In cases of a large pulmonary cavity or of pneumothorax, a clear metallic sound obtained by striking a coin, held against the chest, by another coin, or by flicking the chest wall with one's fingernail; the sound is heard on auscultating the chest wall on the same side anteroposteriorly. Synonym: anvil sound, bell sound, coin test. (05 Mar 2000) |
| atrial sound | The sound produced in late diastole in association with ventricular filling due to atrial systole and related to reduced ventricular compliance. It is a low frequency oscillation that may be normal at older ages owing to a physiologic decline in ventricular compliance but is nearly always abnormal at younger ages if it is of high intensity or palpable. It is common in ventricular hypertrophy, particularly with hypertension, and is almost invariable during acute myocardial infarction. Fourth heart sounds may arise from the right or left ventricle or both. Synonym: atrial sound. (05 Mar 2000) |
| auscultatory sound | A rale, murmur, bruit, fremitus, or other sound heard on auscultation of the chest or abdomen. (05 Mar 2000) |
| bell sound | In cases of a large pulmonary cavity or of pneumothorax, a clear metallic sound obtained by striking a coin, held against the chest, by another coin, or by flicking the chest wall with one's fingernail; the sound is heard on auscultating the chest wall on the same side anteroposteriorly. Synonym: anvil sound, bell sound, coin test. (05 Mar 2000) |
| Campbell sound | A miniature sound with a short round-tipped beak, especially curved for the deep urethra of the young male. (05 Mar 2000) |
| cannon sound | The loud first heart sound heard intermittently in complete atrioventricular block and in interference-dissociation when the ventricles happen to contract shortly after the atria. Synonym: cannon sound. (05 Mar 2000) |
| cardiac sound | The sounds heard over the cardiac region produced by the functioning of the heart. There are four distinct sounds: the first occurs at the beginning of systole and is heard as a "lubb" sound; the second is produced by the closing of the aortic and pulmonary valves and is heard as a "dupp" sound; the third is produced by vibrations of the ventricular walls when suddenly distended by the rush of blood from the atria; and the fourth is produced by atrial contraction and ventricular filling but is rarely audible in the normal heart. The physiological concept of heart sounds is differentiated from the pathological heart murmurs. (12 Dec 1998) |
| gallop sound | The abnormal third or fourth heart sound which, when added to the first and second sound's, produces the triple cadence of gallop rhythm. See: gallop. (05 Mar 2000) |
| van Buren sound | A standard sound, available in several calibers, with a gently curved tip designed to follow the contour of the deep bulbous urethra in the male; used for urethral calibration or dilation. (05 Mar 2000) |
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