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The rhythmic contraction of the heart, especially of the ventricles, by which blood is driven through the aorta and pulmonary artery after each dilation or diastole.
[Greek sustolē, contraction, from sustellein, to contract; see systaltic.]
sys·tol′ic (sĭ-stŏl′ĭk) adj.
(Physiology) contraction of the heart, during which blood is pumped into the aorta and the arteries that lead to the lungs. Compare diastole
[C16: via Late Latin from Greek sustolē, from sustellein to contract; see systaltic]
sys•to•le(ˈsɪs təˌli, -li)
1. the normal rhythmical contraction of the heart, during which the blood in the chambers is forced onward. Compare diastole.
2. (in classical prosody) the shortening of a syllable regularly long.
[1570–80; < Greek systolḗ contraction, n. derivative of systéllein to draw together, contract = sy- sy- + stéllein to prepare, send, gather; compare diastole, systaltic]
sys•tol•ic (sɪˈstɒl ɪk) adj.
The period during the normal beating of the heart in which contraction of the ventricles occurs, forcing blood into the aorta and the arteries that lead to the lungs. Compare diastole.
the rhythmic contraction of the heart, and especially of the ventricles, following each dilatation. Cf. diastole. — systolic, adj.See also: Heart
the shortening of a syllable that is naturally long. Cf. diastole. — systolic, adj.See also: Verse
A contraction of the heart. Compare diastole.
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|Noun||1.||systole - the contraction of the chambers of the heart (especially the ventricles) to drive blood into the aorta and pulmonary artery|
heartbeat, beat, pulse, pulsation - the rhythmic contraction and expansion of the arteries with each beat of the heart; "he could feel the beat of her heart"
extrasystole - a premature systole resulting in a momentary cardiac arrhythmia