heartbeat

Noun
  1. The rhythmic contraction and expansion of the arteries with each beat of the heart (synset 107415506)
    "he could feel the beat of her heart"
    is a type of: periodic event, recurrent event - an event that recurs at intervals
    subtypes:
    • diastole - the widening of the chambers of the heart between two contractions when the chambers fill with blood
    • systole - the contraction of the chambers of the heart (especially the ventricles) to drive blood into the aorta and pulmonary artery
    • pounding, throb, throbbing - an instance of rapid strong pulsation (of the heart)
    same as: beat, pulsation, pulse
  2. A very short time (as the time it takes the eye to blink or the heart to beat) (synset 115271921)
    "if I had the chance I'd do it in a flash"
    is a type of: bit, minute, mo, moment, second - an indefinitely short time
    same as: blink of an eye, flash, instant, jiffy, new york minute, split second, trice, twinkling, wink
  3. An animating or vital unifying force (synset 105202921)
    "New York is the commercial heartbeat of America"
    is a type of: force - a powerful effect or influence

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