Medical Dictionary

diastasis

noun di·as·ta·sis \dī-ˈas-tə-səs\
plural di·as·ta·ses \-ˌsēz\

Medical Definition of DIASTASIS

1
:  an abnormal separation of parts normally joined together
2
:  the rest phase of cardiac diastole occurring between filling of the ventricle and the start of atrial contraction

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