diastole

[ dahy-as-tl-ee, -tl-ee ]
/ daɪˈæs tlˌi, -tl i /

noun

Physiology. the normal rhythmical dilatation of the heart during which the chambers are filling with blood.Compare systole(def 1).
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. 2019

Examples from the Web for diastole

British Dictionary definitions for diastole

diastole

/ (daɪˈæstəlɪ) /

noun

the dilatation of the chambers of the heart that follows each contraction, during which they refill with bloodCompare systole

Derived Forms

diastolic (ˌdaɪəˈstɒlɪk), adjective

Word Origin for diastole

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

Medicine definitions for diastole

diastole

[ dī-ăstə-lē ]

n.

The normal rhythmically occurring relaxation and dilatation of the heart chambers, especially the ventricles, during which they fill with blood.

Related forms

di′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.

Science definitions for diastole

diastole

[ dī-ăstə-lē ]

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 forms

diastolic adjective (dī′ə-stŏlĭk)
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.