atrial fibrillation

/ˌeɪtriəl ˈfɪbrəˌleɪʃən/
IPA guide

Definitions of atrial fibrillation
  1. noun
    fibrillation of the muscles of the atria of the heart
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    type of:
    arrhythmia, cardiac arrhythmia
    an abnormal rate of muscle contractions in the heart
    fibrillation
    muscular twitching involving individual muscle fibers acting without coordination
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