#1 pulsation n. [pulsing, pulse, impulse] (electronics) a sharp transient wave in the normal electrical state (or a series of such transients); "the pulsations seemed to be coming from a star". wn
#2 pulsation n. a periodically recurring phenomenon that alternately increases and decreases some quantity. wn
#3 pulsation n. [pulse, heartbeat, beat] the rhythmic contraction and expansion of the arteries with each beat of the heart; "he could feel the beat of her heart". wn
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