Definition of diastole
: a rhythmically recurrent expansion; especially : the dilatation of the cavities of the heart during which they fill with blood
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Origin and Etymology of diastole
Greek diastolē dilatation, from diastellein to expand, from dia- + stellein to prepare, send
First Known Use: circa 1578
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Britannica English: Translation of diastole for Arabic speakers Britannica.com: Encyclopedia article about diastole
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