Q wave

noun

ˈkyü-ˌ How to pronounce Q wave (audio)
: the short initial downward stroke of the QRS complex in an electrocardiogram formed during the beginning of ventricular depolarization

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Qvar
Q wave
R
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Cite this Entry

“Q wave.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Q%20wave. Accessed 4 Nov. 2025.

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