Diastole meaning

dī-ăstə-lē
(physiology) The normal rhythmically occurring relaxation and dilatation of the heart chambers, especially the ventricles, during which they fill with blood.
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The lengthening of a normally short syllable in Greek and Latin verse.
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The usual rhythmic dilatation of the heart, esp. of the ventricles, following each contraction (systole), during which the heart muscle relaxes and the chambers fill with blood.
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(physiology) The normal rhythmically occurring relaxation and dilatation of the heart chambers, especially the ventricles, during which they fill with blood.
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The period during the normal beating of the heart in which the chambers of the heart dilate and fill with blood. Diastole of the atria occurs before diastole of the ventricles.
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(chiefly uncountable, physiology) The phase or process of relaxation and dilation of the heart chambers, between contractions, during which they fill with blood; an instance of the process.
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(uncountable, prosody) The lengthening of a vowel or syllable beyond its typical length.
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Origin of diastole

  • Greek diastolē dilation, separation from diastellein to expand dia- apart dia– stellein to place, send stel- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek διαστολή (diastolē, “separation, drawing asunder”), from διά (dia, “apart”) + στέλλειν (stellein, “send”).

    From Wiktionary