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·tolic (sĭ-stŏlĭk) adj.
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Indo-European & Semitic Roots Appendices
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