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diastole

[dahy-as-tl-ee, -tl-ee]
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noun
  1. Physiology. the normal rhythmical dilatation of the heart during which the chambers are filling with blood.Compare systole(def 1).
  2. Prosody. the lengthening of a syllable regularly short, especially before a pause or at the ictus.

Origin of diastole

1570–80; < Late Latin diastolē < Greek diastolḗ a putting asunder, dilation, lengthening; compare diastéllein to set apart, equivalent to dia- dia- + stéllein to put, place
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for diastole

Historical Examples

  • The diastole of paralysis is the most frequent form of death.

    Poisons: Their Effects and Detection

    Alexander Wynter Blyth

  • The final diastole may be the diastole of paralysis or the diastole of irritation.

  • The systole of the heart means its contraction: the diastole of the heart means its dilatation.

    William Harvey

    D'Arcy Powers

  • The great secular heart is now in its diastole, or relaxation.

    John Greenleaf Whittier

    W. Sloane Kennedy

  • The heart was found arrested in diastole, and the brain anmic.


British Dictionary definitions for diastole

diastole

noun
  1. the dilatation of the chambers of the heart that follows each contraction, during which they refill with bloodCompare systole
Derived Formsdiastolic (ˌdaɪəˈstɒlɪk), adjective

Word Origin

C16: via Late Latin from Greek: an expansion, from diastellein to expand, from dia- + stellein to place, bring together, make ready
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

Word Origin and History for diastole

n.

1570s, from medical Latin diastole, from Greek diastole "drawing asunder, dilation," from diastellein, from dia- "through, thoroughly, entirely" (see dia-) + stellein "to set in order, arrange, array, equip, make ready," from PIE *stel-yo-, suffixed form of root *stel- "to put, stand," with derivatives referring to a standing object or place (see stall (n.1)).

Online Etymology Dictionary, © 2010 Douglas Harper

diastole in Medicine

diastole

(dī-ăstə-lē)
n.
  1. The normal rhythmically occurring relaxation and dilatation of the heart chambers, especially the ventricles, during which they fill with blood.
Related formsdi′a•stolic (dī′ə-stŏlĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

diastole in Science

diastole

[dī-ăstə-lē]
  1. The period during the normal beating of the heart in which the chambers of the heart dilate and fill with blood. Diastole of the atria occurs before diastole of the ventricles. Compare systole.
Related formsdiastolic adjective (dī′ə-stŏlĭk)
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.