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Medical Term:


Pronunciation: mer′mĕr


  1. A soft sound, like that made by a somewhat forcible expiration with the mouth open, heard on auscultation of the heart, lungs, or blood vessels.
  2. An other-than-soft sound, which may be loud, harsh, or frictional; organic cardiac murmurs may be soft or loud and harsh; pericardial murmurs usually are frictional and are more properly described as “rubs” rather than murmurs.

Synonym(s): susurrus