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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 • 1359 views

vapor

This is a correct spelling, especially in American English.

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.
  • 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

vapour

This is a correct spelling, especially in British English.

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.
  • 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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