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

Word History



First Known Use

1913, in the meaning defined above

Time Traveler
The first known use of S wave was in 1913

Dictionary Entries Near S wave

Cite this Entry

“S wave.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/S%20wave. Accessed 21 Mar. 2023.

Medical Definition

S wave

: the negative downward deflection in the QRS complex of an electrocardiogram that follows the R wave
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