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Hamman's sign. In DICTIOUS you will not only get to know all the dictionary meanings for the word
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English
Etymology
Named after Johns Hopkins clinician Louis Hamman.
Proper noun
Hamman's sign
- (medicine) A crunching, rasping sound, synchronous with the heartbeat, heard over the precordium in spontaneous mediastinal emphysema produced by the heart beating against air-filled tissues.