critical pressure: meaning, definition, pronunciation and examples
C1Formal, technical
Quick answer
What does “critical pressure” mean?
In thermodynamics and fluid mechanics, the pressure required to liquefy a gas at its critical temperature.
Audio
Pronunciation
Definition
Meaning and Definition
In thermodynamics and fluid mechanics, the pressure required to liquefy a gas at its critical temperature; the pressure at the critical point where the liquid and gas phases of a substance become indistinguishable.
Can be used metaphorically to describe a decisive threshold of force or influence in various systems (e.g., political, psychological, or mechanical) where a qualitative change occurs.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling of related terms follows regional conventions (e.g., vapour/vapor).
Connotations
Identically technical in both regions.
Frequency
Equally frequent in scientific/engineering contexts in both UK and US English. Virtually absent in general everyday language.
Grammar
How to Use “critical pressure” in a Sentence
The critical pressure of [SUBSTANCE] is...[SUBSTANCE] has a critical pressure of...to exceed/reach/calculate the critical pressureVocabulary
Collocations
Examples
Examples of “critical pressure” in a Sentence
verb
British English
- The system will fail if we critical-pressure it. (Non-standard; verb use is extremely rare and not accepted.)
American English
- (No standard verb form exists.)
adverb
British English
- (No standard adverbial form.)
American English
- (No standard adverbial form.)
adjective
British English
- The critical-pressure value was recorded in the lab journal.
American English
- The critical-pressure point was marked on the phase diagram.
Usage
Meaning in Context
Business
Not typically used. A metaphorical extension might describe market forces or debt reaching a breaking point.
Academic
Central term in chemistry, physics, and engineering courses and literature regarding phase transitions.
Everyday
Very rare. Might be heard in popular science contexts.
Technical
Precise, quantitative term used in process design, thermodynamics, fluid systems, and material safety data sheets.
Vocabulary
Synonyms of “critical pressure”
Strong
Neutral
Weak
Vocabulary
Antonyms of “critical pressure”
Watch out
Common Mistakes When Using “critical pressure”
- Using 'critical pressure' to mean 'high pressure' (it is a specific thermodynamic value, not just any high pressure).
- Confusing it with 'critical mass' (which relates to quantity, not pressure).
FAQ
Frequently Asked Questions
No. Burst pressure is the mechanical failure point of a container. Critical pressure is a thermodynamic property of a specific substance.
It would be a very creative and technical-sounding metaphor. In everyday language, 'breaking point' or 'extreme pressure' would be more natural.
Yes, every pure substance has a critical point, and therefore a critical pressure (and critical temperature).
Commonly in Pascals (Pa), bars (bar), atmospheres (atm), or pounds per square inch (psi), depending on the scientific or engineering field.
In thermodynamics and fluid mechanics, the pressure required to liquefy a gas at its critical temperature.
Critical pressure is usually formal, technical in register.
Critical pressure: in British English it is pronounced /ˌkrɪt.ɪ.kəl ˈpreʃ.ər/, and in American English it is pronounced /ˌkrɪt̬.ɪ.kəl ˈpreʃ.ɚ/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[Metaphorical] The political situation is reaching a critical pressure where something must give.”
Learning
Memory Aids
Mnemonic
Think of a soda can being shaken. The 'critical pressure' is the exact point inside the can when it can no longer hold the gas and will burst if opened.
Conceptual Metaphor
A POINT OF NO RETURN / A TIPPING POINT (for metaphorical use).
Practice
Quiz
In a thermodynamic context, what does 'critical pressure' specifically define?