vapor vs vapour

Both 'vapor' and 'vapour' are correct spellings of the same word, but they are used in different English-speaking regions. 'Vapor' is the preferred spelling in American English, while 'vapour' is the preferred spelling in British English.

Last updated: March 23, 2024 • 1597 views

This is a correct spelling, especially in American English.

"vapor"

The term 'vapor' is commonly used in American English to refer to the gaseous state of a substance.

Examples:

The warm air turned into vapor as it rose from the lake.
The steam condensed into vapor on the cold window pane.

Show examples from the web [+]

Methyl oxide vapor in this chamber will bind whatever compound
I'll let you know when the vapor trail arrives.
There was a swirling vapor that drifted past me.
That's enough spark to ignite a gasoline vapor.
Looks like some type of energetic vapor.
It begins catalyzation when the vapor hits the bloodstream.
They're vaporized immediately by a holy beam of vapory fire vapor.
The vapor will be fully absorbed in less than nine arns.
The vapor was absorbed an arn ago!
And that's her vapor in those little bubbles.
You said your mother went from a solid to a vapor.
...by a holy beam of vapory fire vapor.
The secret's a vapor, so fine it spreads quickly and not even the wind can blow it away.
Lori Keyser's cause of death was acute respiratory failure due to inhalation of acid vapor.
It is even a vapor that appeareth for a little time and then vanisheth away.
No traces of mercury vapor on the walls, there's... nothing hidden on his computer.
Within the first 65 meters, anyone enveloped in the vapor cloud would be killed, instantly.
The chemical changes from a vapor to a powder and becomes completely inert at that time.
So when the doctor broke the seal, it hit the air and turned to vapor.
A good smoke signal requires dense, visible clouds of smoke or vapor.

Alternatives:

gas
steam
mist
fumes
smoke

This is a correct spelling, especially in British English.

"vapour"

The term 'vapour' is commonly used in British English to refer to the gaseous state of a substance.

Examples:

The vapour from the chemical reaction was toxic.
The clouds formed from the water vapour in the atmosphere.

Show examples from the web [+]

For copper vapour lasers, see 6A005.b.
3. for mercury: cold vapour phase atomic absorption spectrometry (AAS).
.8 minimisation of possible ignition of flammable cargo vapour.
Underneath the alcoholic vapour, there's a lady of considerable intellect and wit.
We tried vapour inhalation with rodent subjects.
SevoFlo 100% Inhalation vapour, liquid for dogs.
BLEVE (boiling liquid expanding vapour explosion)
Fractionation liquids by boiling and collecting the condensed vapour into a separate container.
N.B.:for copper vapour lasers, see 6A005.b.
There is no single measurement procedure applicable to the entire range of vapour pressures.
The vapour should be trapped quantitatively and in a form which permits subsequent analysis.
(A complex combination of hydrocarbons separated from the gases from vapour recovery systems by cooling.
Preheating and vapour injection allows coagulation of proteins associated with carotenoid and chlorophyll pigments.
Parts of steam and other vapour turbines, n.e.s.
Cold vapour is used only in the case of mercury.
Substances evolving flammable vapour include polymers containing flammable liquids with a flash-point not exceeding 55 ºC.
adequate ventilation and, where necessary, proper vapour extraction;
minimization of possible ignition of flammable cargo vapour.
The EESC recommends that the equipment for Stage II petrol vapour recovery systems be more clearly defined.
Symptoms of human overexposure (inhalation) to sevoflurane vapour include respiratory depression, hypotension, bradycardia, shivering, nausea and headache.

Alternatives:

gas
steam
mist
fumes
smoke

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vapor vs vapour

"vapor"

"vapour"

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