pulsation

1. The act of pulsating.
2. A single beat, throb, or vibration.

noun

A periodic contraction or sound of something coursing: beat, palpitation, pulse, throb. See repetition, sounds/pleasant sounds/unpleasant sounds/neutral sounds or silence.

In a furnace, the panting of the flames; an indication of rapid, cyclical changes of pressure in the furnace.

1. The act of pulsating.
2. A single beat, throb, or vibration.

The noun has 3 meanings:

Meaning #1: (electronics) a sharp transient wave in the normal electrical state (or a series of such transients)
  Synonyms: pulsing, pulse, impulse

Meaning #2: a periodically recurring phenomenon that alternately increases and decreases some quantity

Meaning #3: the rhythmic contraction and expansion of the arteries with each beat of the heart
  Synonyms: pulse, heartbeat, beat