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Symbol for second heart sound.
Farlex Partner Medical Dictionary © Farlex 2012
S2Cardiology The 2nd heart sound, which corresponds to the closure of semilunar–pulmonary and aortic valves, which is a short, higher pitched “dubb”.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
Abbreviation for second heart sound.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012