[ dahy-as-tuh-sis ]
/ daɪˈæs tə sɪs /

noun, plural di·as·ta·ses [dahy-as-tuh-seez] /daɪˈæs təˌsiz/.

Medicine/Medical. the separation of normally joined parts, as in the dislocation of bones, without fracture.
Physiology. the diastolic rest period immediately preceding systole.

Origin of diastasis

1735–45; < New Latin < Greek diástasis a separation. See dia-, stasis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for diastasis

British Dictionary definitions for diastasis

/ (daɪˈæstəsɪs) /

noun plural -ses (-ˌsiːz)

  1. the separation of an epiphysis from the long bone to which it is normally attached without fracture of the bone
  2. the separation of any two parts normally joined
physiol the last part of the diastolic phase of the heartbeat

Derived forms of diastasis

diastatic (ˌdaɪəˈstætɪk), adjective

Word Origin for diastasis

C18: New Latin, from Greek: a separation, from diistanai to separate, from dia- + histanai to place, make stand
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for diastasis

[ dī-ăstə-sĭs ]


Separation of normally joined parts, such as the separation of certain abdominal muscles during pregnancy.divarication
The last stage of diastole in the heart, occurring just before contraction and during which little additional blood enters the ventricle.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.