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n 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 ameba) di*a*stol*ic adj 
Similar sounding terms:   diacetyl  dis·tal  dis·till 

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Montgomery County Memorial Hospital (Red Oak, Iowa - Montgomery County)