diastole

noun
di·​as·​to·​le | \ dī-ˈa-stə-(ˌ)lē How to pronounce diastole (audio) \

Definition of diastole

: a rhythmically recurrent expansion especially : the relaxation and dilation of the chambers of the heart and especially the ventricles during which they fill with blood — compare systole

Other Words from diastole

diastolic \ ˌdī-​ə-​ˈstä-​lik How to pronounce diastole (audio) \ adjective

Examples of diastole in a Sentence

Recent Examples on the Web For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole Jennifer Nalewicki, Smithsonian, 21 July 2017 For us this was diastole; the condition of the heart when it's fully dilated with blood just before it's ejected with a heart contraction to the body. Jennifer Nalewicki, Smithsonian, 22 July 2017 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'diastole.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of diastole

circa 1578, in the meaning defined above

History and Etymology for diastole

Greek diastolē dilatation, from diastellein to expand, from dia- + stellein to prepare, send

Buying Guide

Our Reviews team has selected the best blood pressure monitors.

Learn More About diastole

Time Traveler for diastole

Time Traveler

The first known use of diastole was circa 1578

See more words from the same year

Dictionary Entries Near diastole

diastimeter

diastole

diastomatic

See More Nearby Entries 

Statistics for diastole

Cite this Entry

“Diastole.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diastole. Accessed 16 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for diastole

diastole

noun
di·​as·​to·​le | \ dī-ˈas-tə-(ˌ)lē How to pronounce diastole (audio) \

Medical Definition of diastole

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 amoeba)

Other Words from diastole

diastolic \ ˌdī-​ə-​ˈstäl-​ik How to pronounce diastole (audio) \ adjective

More from Merriam-Webster on diastole

Britannica English: Translation of diastole for Arabic Speakers

Britannica.com: Encyclopedia article about diastole

WORD OF THE DAY

Test Your Vocabulary

Name That Food

  • a-light
  • Name these cookies!
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!