partial vacuum: meaning, definition, pronunciation and examples
C1/C2Formal; Technical/Scientific
Quick answer
What does “partial vacuum” mean?
A space in which the pressure is significantly lower than the surrounding atmospheric pressure, but not a complete absence of matter.
Audio
Pronunciation
Definition
Meaning and Definition
A space in which the pressure is significantly lower than the surrounding atmospheric pressure, but not a complete absence of matter.
A situation, condition, or environment where something (e.g., power, information, presence) is significantly diminished or lacking, though not entirely absent.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. The concept is identical in scientific contexts.
Connotations
Identical technical connotations. Potential metaphorical use ('a partial vacuum of leadership') is equally rare and formal in both varieties.
Frequency
Very low frequency in general discourse, used almost exclusively in scientific/engineering contexts. No notable regional frequency variation.
Grammar
How to Use “partial vacuum” in a Sentence
The system operates in/under a partial vacuum.They created a partial vacuum in the chamber.A partial vacuum was formed.It requires a partial vacuum to function.Vocabulary
Collocations
Examples
Examples of “partial vacuum” in a Sentence
verb
British English
- [Not applicable as a verb]
American English
- [Not applicable as a verb]
adverb
British English
- [Not applicable as an adverb]
American English
- [Not applicable as an adverb]
adjective
British English
- [The term is a noun phrase. 'Partial' is an adjective modifying 'vacuum'.]
American English
- [The term is a noun phrase. 'Partial' is an adjective modifying 'vacuum'.]
Usage
Meaning in Context
Business
Rare. Possible metaphor: 'The CEO's sudden departure created a partial vacuum of authority, causing confusion among mid-level managers.'
Academic
Common in physics, engineering, and materials science papers describing experimental setups. 'The sample was deposited in a partial vacuum of 10^-3 Torr.'
Everyday
Extremely rare. Would only be used by someone describing technical equipment (e.g., a vacuum cleaner's mechanism might create one).
Technical
Core usage. Refers to a specific, measurable pressure state between atmospheric pressure and a perfect vacuum.
Vocabulary
Synonyms of “partial vacuum”
Strong
Neutral
Weak
Vocabulary
Antonyms of “partial vacuum”
Watch out
Common Mistakes When Using “partial vacuum”
- Using 'partial vacuum' to mean 'a little bit of a vacuum cleaner'. Confusing it with 'perfect vacuum'. Using it in casual speech where 'low pressure' or simply 'vacuum' (contextually understood) would suffice.
FAQ
Frequently Asked Questions
No. Outer space is an extreme, near-perfect vacuum. A partial vacuum is a controlled, less complete low-pressure state, often created artificially in labs or machinery on Earth.
It would sound very technical and out of place. In everyday contexts, people say 'vacuum' (e.g., 'vacuum cleaner', 'suck out the air') without specifying 'partial'.
In strict scientific terms, a perfect vacuum (zero pressure) is theoretical. All real-world 'vacuums' are partial vacuums. In general use, 'vacuum' often implies a 'partial vacuum'.
It's a noun phrase consisting of the adjective 'partial' modifying the noun 'vacuum'. It is not typically hyphenated unless used attributively (e.g., 'partial-vacuum conditions').
A space in which the pressure is significantly lower than the surrounding atmospheric pressure, but not a complete absence of matter.
Partial vacuum is usually formal; technical/scientific in register.
Partial vacuum: in British English it is pronounced /ˈpɑː.ʃəl ˈvæk.juːm/, and in American English it is pronounced /ˈpɑːr.ʃəl ˈvæk.juːm/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No common idioms. The term itself is technical.]”
Learning
Memory Aids
Mnemonic
Think of a vacuum cleaner: it doesn't create a perfect, total emptiness (that's impossible on Earth), but it does create a 'partial vacuum'—a space with much less air—which sucks in dust.
Conceptual Metaphor
ABSENCE IS EMPTINESS / LACK IS A VACUUM (e.g., 'a power vacuum', extended to 'partial' for a diminished lack).
Practice
Quiz
In which context is the term 'partial vacuum' MOST appropriately used?