Medical Definition of pulse
1a: a regularly recurrent wave of distension in arteries that results from the progress through an artery of blood injected into the arterial system at each contraction of the ventricles of the heartb: the palpable beat resulting from such pulse as detected in a superficial artery (as the radial artery) <a very soft pulse>; also : the number of such beats in a specified period of time (as one minute) <a resting pulse of 70>
3a: a transient variation of a quantity (as electric current or voltage) whose value is normally constant—often used of current variations produced artificially and repeated either with a regular period or according to some codeb: an electromagnetic wave or modulation thereof having brief durationc: a brief disturbance transmitted through a medium
4: a dose of a substance especially when applied over a short period of time <therapy with pulses of intravenous methylprednisolone>
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