in a heartbeat

1 definition found

in a heartbeat - Collaborative International Dictionary of English v.0.48 :

  heartbeat \heartbeat\ n.
     the audible and palpable rhythmic contraction and expansion
     of the arteries with each beat of the heart; as, he listened
     to her heartbeat with a stethoscope.
  
     Syn: pulse, pulsation, beat.
          [WordNet 1.5]
  
     in a heartbeat immediately.
        [PJC]