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arrhythmia

Pronunciation: /eɪˈrɪðmɪə/
(also arhythmia)
Definition of arrhythmia

noun

[mass noun] Medicine
  • a condition in which the heart beats with an irregular or abnormal rhythm.

Origin:

late 19th century: from Greek arruthmia 'lack of rhythm', from a- 'without' + rhuthmos (see rhythm)

arrhythmia in other Oxford dictionaries

Definition of arrhythmia in the US English dictionary