diastole
noun
di·as·to·le dī-ˈa-stə-(ˌ)lē 
: a rhythmically recurrent expansion
especially : the relaxation and dilation of the chambers of the heart and especially the ventricles during which they fill with blood compare systole
diastolic
ˌdī-ə-ˈstä-lik
adjective 
Example Sentences
Recent Examples on the Web For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. 
Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 22 July 2017 See More
Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 22 July 2017 See More Word History
Etymology
Greek diastolē dilatation, from diastellein to expand, from dia- + stellein to prepare, send
First Known Use
circa 1578, in the meaning defined above
Medical Definition
diastole
noun
di·as·to·le dī-ˈas-tə-(ˌ)lē
1
: the passive rhythmical expansion or dilation of the cavities of the heart during which they fill with blood compare systole
2
: the rhythmical expansion of a pulsating vacuole (as of an amoeba)
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