pulsation

noun5

1. •
   The regular throbbing of the heart, an artery etc. in a living body; the pulse.

   • Pulsation had ceased. For three days the body was preserved unburied, during which it had acquired a stony rigidity. — 1844
2. •
   Any rhythmic beating, throbbing etc.
3. •
   The rhythmic increase and decrease of size in naked zoospores and plasmodia.
4. •
   A single beat, throb or vibration.
5. •
   (no longer used) Physical striking; a blow.

   • By the Cornelian law, pulsation as well as verberation is prohibited. — 1765