Definition of S wave
: a wave (as from an earthquake) in which the propagated disturbance is a shear in an elastic medium (such as the earth) — compare pressure wave
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Origin and Etymology of s wave
secondary
Medical Dictionary
noun
\
ˈes-ˌ
\
medical Definition of S wave
: the negative downward deflection in the QRS complex of an electrocardiogram that follows the R wave
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