Vapor vs. Vapour: Know the Difference
By Shumaila Saeed || Updated on December 25, 2023
Vapor and vapour are the same substance, gaseous forms of liquids or solids, with "vapor" being the American spelling and "vapour" the British spelling.
Key Differences
Vapor is the preferred spelling in American English, while vapour is used in British English. Both terms refer to the same physical phenomenon.
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Nov 30, 2023
In scientific contexts, vapor and vapour are used interchangeably to describe a substance in its gaseous phase. The choice of spelling depends on the regional language norm.
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Nov 30, 2023
The difference in spelling reflects the broader linguistic variations between American and British English. Vapor follows American conventions, while vapour aligns with British English.
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Both vapor and vapour originate from the Latin word "vapor," meaning steam or heat. The spelling divergence occurred with the evolution of American English.
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Nov 30, 2023
Writers and educators choose vapor or vapour based on their regional language standards. The meaning and usage remain consistent in both forms.
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Nov 30, 2023
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Comparison Chart
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Vapor and Vapour Definitions
Vapor
Gaseous form of a substance that is liquid or solid at room temperature
Water turns to vapor when boiled.
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Nov 30, 2023
Vapour
The gas phase of a substance below critical temperature
He observed the vapour rising from the hot spring.
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Vapor
A faint trace of something
There was a vapor of suspicion around the event.
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Vapour
Moisture in the air visible as fog or mist
The cold air turned her breath into vapour.
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Vapor
An unstable or transient occurrence
His dreams of wealth vanished into vapor.
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Vapour
A slight or ephemeral thing
Her promise turned out to be mere vapour.
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Vapor
The gaseous state of a substance that is liquid or solid at room temperature.
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Vapour
A gaseous byproduct of a chemical reaction
The reaction released a harmless vapour.
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Vapor
A faintly visible suspension of fine particles of matter in the air, as mist, fumes, or smoke.
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Oct 19, 2023
Vapour
A medically therapeutic steam
Eucalyptus vapour helps clear nasal passages.
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Vapor
A mixture of fine droplets of a substance and air, as the fuel mixture of an internal-combustion engine.
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Oct 19, 2023
Vapor
Exhalations within a bodily organ, especially the stomach, supposed to affect the mental or physical condition. Used with the.
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Oct 19, 2023
Vapor
To vaporize
“You wished you'd seen one of the monster shots that vapored an atoll way back when” (Don DeLillo).
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Oct 19, 2023
Vapor
To engage in idle, boastful talk
Vapored on about his accomplishments.
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Oct 19, 2023
Vapor
Cloudy diffused matter such as mist, steam or fumes suspended in the air.
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Oct 19, 2023
Vapor
Something insubstantial, fleeting, or transitory; unreal fancy; vain imagination; idle talk; boasting.
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Oct 19, 2023
Vapor
(dated) Any medicinal agent designed for administration in the form of inhaled vapour.
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Oct 19, 2023
Vapor
Hypochondria; melancholy; the blues; hysteria, or other nervous disorder.
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Oct 19, 2023
Vapor
(intransitive) To become vapor; to be emitted or circulated as vapor.
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Oct 19, 2023
Vapor
Any substance in the gaseous, or aëriform, state, the condition of which is ordinarily that of a liquid or solid.
Vapor is any substance in the gaseous condition at the maximum of density consistent with that condition. This is the strict and proper meaning of the word vapor.
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Oct 19, 2023
Vapor
In a loose and popular sense, any visible diffused substance floating in the atmosphere and impairing its transparency, as smoke, fog, etc.
The vapour which that fro the earth glood [glided].
Fire and hail; snow and vapors; stormy wind fulfilling his word.
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Oct 19, 2023
Vapor
Something unsubstantial, fleeting, or transitory; unreal fancy; vain imagination; idle talk; boasting.
For what is your life? It is even a vapor, that appeareth for a little time, and then vanisheth away.
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Oct 19, 2023
Vapor
A medicinal agent designed for administration in the form of inhaled vapor.
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Oct 19, 2023
Vapor
To pass off in fumes, or as a moist, floating substance, whether visible or invisible, to steam; to be exhaled; to evaporate.
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Oct 19, 2023
Vapor
To emit vapor or fumes.
Running waters vapor not so much as standing waters.
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Vapor
To talk idly; to boast or vaunt; to brag.
Poets used to vapor much after this manner.
We vapor and say, By this time Matthews has beaten them.
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Oct 19, 2023
Vapor
To send off in vapor, or as if in vapor; as, to vapor away a heated fluid.
He'd laugh to see one throw his heart away,Another, sighing, vapor forth his soul.
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Vapor
A visible mist or steam
The morning air was filled with the vapor from the lake.
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Nov 30, 2023
Vapor
A gas produced by evaporation or sublimation
The tea kettle emitted a steady stream of vapor.
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Repeatedly Asked Queries
Are vapor and vapour interchangeable?
Yes, they are interchangeable but depend on regional spelling norms.
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Nov 30, 2023
Does vapour have a smell?
It can, depending on the substance from which it originates.
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Is vapor visible?
Yes, vapor can be visible, like steam from boiling water.
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Can vapour exist at room temperature?
Yes, many substances can produce vapour at room temperature.
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Can vapour be used in therapy?
Yes, certain types of vapours are used in therapeutic treatments.
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Does vapor affect weather?
Yes, water vapor plays a significant role in weather patterns.
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Is vapour different from smoke?
Yes, smoke is a result of combustion, while vapour is from evaporation or sublimation.
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Can vapor be measured?
Yes, vapor pressure and concentration can be measured.
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Do all liquids produce vapour?
Most liquids can produce vapour under the right conditions.
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Is vapor always related to water?
No, vapor refers to the gaseous state of any substance.
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Is vapor compression used in refrigeration?
Yes, vapor compression is a common method in refrigeration cycles.
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Can vapour freeze?
Vapour can condense and then freeze if the temperature is low enough.
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Does vapor contribute to humidity?
Yes, water vapor is a key component of humidity.
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Can vapour cause corrosion?
Yes, certain types of vapour can cause metal corrosion.
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Can vapour be toxic?
Some vapours, like those from chemicals, can be toxic.
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Can vapour conduct electricity?
Generally, no, unless it contains ionized particles.
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Is vapor pressure significant in meteorology?
Yes, vapor pressure is a critical factor in meteorological studies.
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Is vapor density important?
Yes, vapor density is important in various scientific calculations.
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Nov 30, 2023
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About Author
Written by
Shumaila SaeedShumaila Saeed, an expert content creator with 6 years of experience, specializes in distilling complex topics into easily digestible comparisons, shining a light on the nuances that both inform and educate readers with clarity and accuracy.
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