pulsation
- n (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 - n a periodically recurring phenomenon that alternately increases and decreases some quantity
- n the rhythmic contraction and expansion of the arteries with each beat of the heart
- Variations in electric charge cause atoms to expand, contract, result in a pulsation of the earth.
- Contraction of the heart pushed the small lead pellet into the left ventricle, whence further pulsation drove it into the aorta, main feeder of the arterial system.
- The classic example of this pulsation is the periodic appearance of Scandinavian lemmings, which every three to four years rush by thousands to the coasts, then swim far out to .