Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun extrasystole

1 sense of extrasystole

Sense 1
extrasystole -- (a premature systole resulting in a momentary cardiac arrhythmia)
       => systole -- (the contraction of the chambers of the heart (especially the ventricles) to drive blood into the aorta and pulmonary artery)