noun[mass noun] Medicine
A condition in which the heart beats with an irregular or abnormal rhythm.
- The answer is they have all been affected by types of arrhythmia, or heart rhythm disorders.
- If you suffer from heart failure you can suddenly die from erratic heart beat - arrhythmia.
- An arrhythmia may cause the heart's rhythm to be irregular, abnormally fast, or abnormally slow.
Late 19th century: from Greek arruthmia 'lack of rhythm', from a- 'without' + rhuthmos (see rhythm).
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