Systole

n.	1.	(Gram.) The shortening of the long syllable.
	2.	(Physiol. & Biol.) The contraction of the heart and arteries by which the blood is forced onward and the circulation kept up; also, the contraction of a rhythmically pulsating contractile vacuole; - correlative to diastole.

Noun

1.

systole - the contraction of the chambers of the heart (especially the ventricles) to drive blood into the aorta and pulmonary artery

abbreviation, arsis, astriction, astringency, beat, bottleneck, bout, cervix, circle, circuit, circumscription, coarctation, compactedness, compaction, compression, compressure, concentration, condensation, consolidation, constriction, constringency, contraction, contracture, course, curtailment, cycle, decrease, diastole, diminuendo, downbeat, hourglass, hourglass figure, isthmus, knitting, narrow place, narrowing, neck, puckering, pulse, pursing, reduction, revolution, rotation, round, series, shortening, solidification, spell, stranglement, strangulation, striction, stricture, thesis, turn, upbeat, wasp waist, wheel, wrinkling