Definitions of fibrillation
  1. noun
    muscular twitching involving individual muscle fibers acting without coordination
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    atrial fibrillation
    fibrillation of the muscles of the atria of the heart
    ventricular fibrillation
    fibrillation of heart muscles resulting in interference with rhythmic contractions of the ventricles and possibly leading to cardiac arrest
    type of:
    twitch, twitching, vellication
    a sudden muscle spasm; especially one caused by a nervous condition
  2. noun
    act or process of forming fibrils
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    type of:
    branching, fork, forking, ramification
    the act of branching out or dividing into branches
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