- Physiology. the normal rhythmical dilatation of the heart during which the chambers are filling with blood.Compare systole(def 1).
- Prosody. the lengthening of a syllable regularly short, especially before a pause or at the ictus.
Origin of diastole
Examples from the Web for diastole
The diastole of paralysis is the most frequent form of death.
The final diastole may be the diastole of paralysis or the diastole of irritation.
The systole of the heart means its contraction: the diastole of the heart means its dilatation.William Harvey
The great secular heart is now in its diastole, or relaxation.John Greenleaf Whittier
W. Sloane Kennedy
The heart was found arrested in diastole, and the brain anmic.
- the dilatation of the chambers of the heart that follows each contraction, during which they refill with bloodCompare systole
Word Origin and History for diastole
1570s, from medical Latin diastole, from Greek diastole "drawing asunder, dilation," from diastellein, from dia- "through, thoroughly, entirely" (see dia-) + stellein "to set in order, arrange, array, equip, make ready," from PIE *stel-yo-, suffixed form of root *stel- "to put, stand," with derivatives referring to a standing object or place (see stall (n.1)).
- The normal rhythmically occurring relaxation and dilatation of the heart chambers, especially the ventricles, during which they fill with blood.
- 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. Compare systole.