The name given either to the FREMITUS felt, or to the grating noise heard, when two rough surfaces of the body move over one another. It is characteristically obtained over the chest in cases of dry PLEURISY.
(friction rub) a scratching sound, heard over the heart with the aid of the stethoscope, in patients who have *pericarditis. It results from the two inflamed layers of the pericardium rubbing together during activity of the heart.... friction murmur
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