Noun
The rhythmical expansion or dilatation of the heart and arteries; -- correlative to systole, or contraction.
A figure by which a syllable naturally short is made long.
Source: Webster's dictionaryit will never be outmoded as long as the systole and diastole of human life survives, and men fluctuate between progress and reaction, growth and decline, hope and illusion. Robert Gordis
At the beginning of the cardiac cycle, in early diastole, both the atria and ventricles are relaxed. Source: Internet
For I could neither rightly perceive at first when the systole and when the diastole took place by reason of the rapidity of the movement.. Source: Internet
During diastole, blood flows through the ostia from the pericardial sinus (the cavity containing the heart) into the heart. Source: Internet
In late diastole the atria contract, pumping more blood into the ventricles. Source: Internet
Preload refers to the filling pressure of the atria at the end of diastole, when they are at their fullest. Source: Internet