Premature-beat
noun, Medicine/Medical.
1.
extrasystole.
extrasystole
[ek-struh-sis-tuh-lee] /ˌɛk strəˈsɪs tə li/
noun, Pathology.
1.
a premature contraction of the heart, resulting in momentary interruption of the normal heartbeat.
extrasystole ex·tra·sys·to·le (ěk’strə-sĭs’tə-lē)
n.
An ectopic, usually premature contraction of the heart, resulting in momentary cardiac arrhythmia. Also called premature systole.
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