Medical Definition of Second heart sound

1. 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 Heart Sound Pictures

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Lexicographical Neighbors of Second Heart Sound

second gear
second gears
second grade
second grades
second growth
second guess
second guessed
second guesser
second guessers
second guesses
second guessing
second half
second halves
second hand
second hands
second heart sound (current term)
second helping
second helpings
second home
second homes
second imperative
second imperatives
second in command
second incisor
second innings
second inversion
second inversions
second island chain
second joint
second joints

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