definition of
pulsation

[1] #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] #2 pulsation n. a periodically recurring phenomenon that alternately increases and decreases some quantity. wn

[3] #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