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Medical Definition of Accrochage
1. Intermittent synchronization of two different rhythms of the heart with one influencing the behaviour of the other when neither is dominant; seen in cases of atrioventricular dissociation when an atrial beat falls shortly after a ventricular beat, the latter causing the atrial beat to occur sooner than expected. Origin: Fr. Hooking, hitching (05 Mar 2000)