| A1 | aortic first sound |
|---|---|
| A2 | aortic second sound |
| A2-OS | aortic second sound, opening snap |
| ACS | acrocallosal syndrome; acrocephalosyndactyly; acute chest syndrome; acute confusional state; Alcon C... |
| AOS | American Ophthalmological Society; American Otological Society; anodal opening sound; anterior [o]es... |
| posttussis suction sound | A sound produced by the falling back of a drop of mucus or pus into a pulmonary cavity after the latter has been emptied by coughing. (05 Mar 2000) |
|---|---|
| sail sound | A sound, likened to the snapping of a sail; the abnormal first heart sound in some patients with Ebstein's anomaly. (05 Mar 2000) |
| Santini's booming sound | A sonorous booming sound heard on auscultatory percussion of a hydatid cyst. (05 Mar 2000) |
| xiphisternal crunching sound | See: Hamman's sign. (05 Mar 2000) |
| hippocratic succussion sound | A splashing sound elicited by shaking a patient with hydro-or pyopneumothorax, the physician's ear being applied to the chest. (05 Mar 2000) |
| second heart sound | The second sound heard on auscultation of the heart; signifies the beginning of diastole and is due to closure of the semilunar valves. Synonym: second sound. (05 Mar 2000) |
| second sound | The second sound heard on auscultation of the heart; signifies the beginning of diastole and is due to closure of the semilunar valves. Synonym: second sound. (05 Mar 2000) |
| Simpson uterine sound | A slender flexible metal rod used to calibrate or dilate the cervical canal, or to hold the uterus in various positions during gynecologic surgery. (05 Mar 2000) |
| Sims uterine sound | A slender flexible sound with a small projection about 7 cm from its tip, used to estimate the size and caliber of the uterine cavity. (05 Mar 2000) |
| sound | The air bladder of a fish; as, cod sounds are an esteemed article of food. Origin: AS. Sund a swimming, akin to E. Swim. See Swim. 1. Whole; unbroken; unharmed; free from flaw, defect, or decay; perfect of the kind; as, sound timber; sound fruit; a sound tooth; a sound ship. 2. Healthy; not diseased; not being in a morbid state; said of body or mind; as, a sound body; a sound constitution; a sound understanding. 3. Firm; strong; safe. "The brasswork here, how rich it is in beams, And how, besides, it makes the whole house sound." (Chapman) 4. Free from error; correct; right; honest; true; faithful; orthodox; said of persons; as, a sound lawyer; a sound thinker. "Do not I know you a favorer Of this new seat? Ye are nor sound." (Shak) 5. Founded in truth or right; supported by justice; not to be overthrown on refuted; not fallacious; as, sound argument or reasoning; a sound objection; sound doctrine; sound principles. "Hold fast the form of sound words, which thou hast heard of me." (2 Tim. I. 13) 6. Heavy; laid on with force; as, a sound beating. 7. Undisturbed; deep; profound; as, sound sleep. 8. Founded in law; legal; valid; not defective; as, a sound title to land. Sound is sometimes used in the formation of self-explaining compounds; as, sound-headed, sound-hearted, sound-timbered, etc. Sound currency, a currency whose actual value is the same as its nominal value; a currency which does not deteriorate or depreciate or fluctuate in comparision with the standard of values. Origin: OE. Sound, AS. Sund; akin to D. Gezond, G. Gesund, OHG. Gisunt, Dan. & Sw. Sund, and perhaps to L. Sanus. Cf. Sane. <geography> A narrow passage of water, or a strait between the mainland and an island; also, a strait connecting two seas, or connecting a sea or lake with the ocean; as, the Sound between the Baltic and the german Ocean; Long Island Sound. "The Sound of Denmark, where ships pay toll." (Camden) Sound dues, tolls formerly imposed by Denmark on vessels passing through the Baltic Sound. Origin: AS. Sund a narrow sea or strait; akin to Icel, Sw, Dan. & G. Sund, probably so named because it could be swum across. See Swim. <zoology> A cuttlefish. 1. To measure the depth of; to fathom; especially, to ascertain the depth of by means of a line and plummet. 2. To ascertain, or try to ascertain, the thoughts, motives, and purposes of (a person); to examine; to try; to test; to probe. "I was in jest, And by that offer meant to sound your breast." (Dryden) "I've sounded my Numidians man by man." (Addison) 3. <medicine> To explore, as the bladder or urethra, with a sound; to examine with a sound; also, to examine by auscultation or percussion; as, to sound a patient. Origin: F. Sonder; cf. AS. Sundgyrd a sounding rod, sundline a sounding line (see Sound a narrow passage of water). <medicine> Any elongated instrument or probe, usually metallic, by which cavities of the body are sounded or explored, especially the bladder for stone, or the urethra for a stricture. Origin: F. Sonde. See Sound to fathom. Source: Websters Dictionary (01 Mar 1998) |
| sound-board | A sounding-board. "To many a row of pipes the sound-board breathes." (Milton) Source: Websters Dictionary (01 Mar 1998) |
| sound localization | Ability to determine the specific location of a sound source. (12 Dec 1998) |
| sound pressure level | A measure of sound energy relative to 0.0002 dynes/cm2, expressed in decibels. (05 Mar 2000) |
| sound spectrography | The graphic registration of the frequency and intensity of sounds, such as speech, infant crying, and animal vocalizations. (12 Dec 1998) |
| succussion sound | The noise made by fluid with overlying air when shaken, such as occurs with gastric dilatation or with fluid and air in a pleural cavity (hydropneumothorax). (05 Mar 2000) |