diastole: meaning, definition, pronunciation and examples
C2Academic, Medical, Technical, Literary
Quick answer
What does “diastole” mean?
The phase of the heartbeat when the heart muscle relaxes and the chambers fill with blood, following a contraction (systole).
Audio
Pronunciation
Definition
Meaning and Definition
The phase of the heartbeat when the heart muscle relaxes and the chambers fill with blood, following a contraction (systole).
In a broader literary or metaphorical sense, a period of relaxation or expansion, contrasting with a period of tension or contraction.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. Pronunciation differences are standard for UK vs. US English.
Connotations
Identical. Strictly technical/medical in standard use.
Frequency
Equally low frequency in general language, but standard and common within cardiology and related fields in both regions.
Grammar
How to Use “diastole” in a Sentence
The [noun] occurs during diastole.[Measurement] is taken at the end of diastole.Diastole follows [systole].Vocabulary
Collocations
Examples
Examples of “diastole” in a Sentence
adjective
British English
- The diastolic reading was a healthy 80 mmHg.
American English
- Her diastolic pressure was slightly elevated.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Standard term in medical, biological, and physiological texts and lectures.
Everyday
Extremely rare outside of discussions about personal health (e.g., blood pressure readings).
Technical
Core, precise term in cardiology, medical diagnostics, and physiology.
Vocabulary
Synonyms of “diastole”
Neutral
Weak
Vocabulary
Antonyms of “diastole”
Watch out
Common Mistakes When Using “diastole”
- Mispronouncing it as 'die-ASS-tole'.
- Using it as a general synonym for 'rest' outside of a clear metaphorical contrast with 'systole'.
- Confusing which blood pressure number (the lower, diastolic) corresponds to diastole.
FAQ
Frequently Asked Questions
No, it is a technical term from medicine and physiology. Most people encounter it only in the context of blood pressure (the diastolic number) or in advanced biology studies.
Systolic pressure (the higher number) is the pressure in your arteries when your heart beats (contracts). Diastolic pressure (the lower number) is the pressure when your heart rests between beats (during diastole).
Yes, but it's a learned, literary metaphor. It can describe a period of calm or receptiveness between periods of activity or stress, e.g., 'the diastole of summer between the systole of spring exams and autumn term.'
In American English, it is typically pronounced /daɪˈæstəli/ (dye-ASS-tuh-lee), with the primary stress on the second syllable.
The phase of the heartbeat when the heart muscle relaxes and the chambers fill with blood, following a contraction (systole).
Diastole is usually academic, medical, technical, literary in register.
Learning
Memory Aids
Mnemonic
Think: 'DIE-a-stole-ee' – Imagine your heart taking a rest, 'dying' down (dia-) for a moment to 'steal' (stole) some blood to fill up.
Conceptual Metaphor
THE HEARTBEAT IS A TWO-PART RHYTHM (expansion/contraction, rest/action, intake/output). LIFE/ACTIVITY IS A PULSE (periods of diastole/rest alternating with systole/effort).
Practice
Quiz
Which of the following best describes 'diastole'?