A delayed contraction of the heart; opposed to premature contraction or extrasystole. ... Origin: G. Hysteros, following, after, + systole, a contracting ... (05 Mar 2000) ... 
Type: Term Pronunciation: his′ter-ō-sis′tō-lē Definitions: 1. A delayed contraction of the heart; opposed to premature contraction or extrasystole.