Noun Vapor Definition and Examples







A substance diffused or suspended in the air, especially one normally liquid or solid.
  1. count noun 'petrol vapours'
  2. 'As water vapor condenses in the air each night, grass, plants and cars are covered by morning with a thin layer of water.'
  3. 'Never ignite vapors from aerosol cans, they can explode.'
  4. 'Having grown up in a cloud of nicotine vapour I am still thankful that I never succumbed.'
  5. 'A nebulizer machine turns liquid medicine into a vapor that you breathe.'
  6. 'Work should be carried out in a well ventilated area, and ingestion and inhalation of the vapour should be avoided.'
  7. 'A nebuliser is a device that turns a medicine into an vapour, and is used with a face mask or mouthpiece.'
  8. 'You might also add a few drops of the oil to a hot bath and soak for a while, inhaling the steamy vapors.'
  9. 'Mercury vapors can cause toxic effects on the central and peripheral nervous system, lungs, kidneys, skin, and eyes.'
  10. 'A few die-hards do start their exercises early, their breath turning to vapour in the cold.'
  11. 'Ethyl chloride is a rapid-acting general anesthetic that becomes flammable and explosive when 4 to 15 percent of the vapor is mixed with air.'
  12. 'A gas is distinguished from a vapor in that a gas is above the critical point at which the liquid boils.'
A sudden feeling of faintness or nervousness or a state of depression.
  1. 'She sat at the table, legs propped up on the table in a manner that would give ladies in the finer centres of Europe a case of the vapours.'
  2. '‘If you have ever got the vapours when your teenager has stood beside your fixed-line phone making an expensive mobile call, then this addresses the problem,’ he said.'
  3. 'Clark himself - who was so pro-Thatcher he had a fit of the vapours in her presence - was not a fan.'


Talk in a vacuous, boasting, or pompous way.
  1. 'Neither of these vaporings has the remotest basis in the actual Constitution.'
  2. 'Their coverage was dominated by the self-important vapourings of a stream of politicians.'
((n.) Any substance in the gaseous, or aeriform, state, the condition of which is ordinarily that of a liquid or solid.|--|(n.) In a loose and popular sense, any visible diffused substance floating in the atmosphere and impairing its transparency, as smoke, fog, etc.|--|(n.) Wind; flatulence.|--|(n.) Something unsubstantial, fleeting, or transitory; unreal fancy; vain imagination; idle talk; boasting.|--|(n.) An old name for hypochondria, or melancholy; the blues.|--|(n.) A medicinal agent designed for administration in the form of inhaled vapor.|--|(n.) To pass off in fumes, or as a moist, floating substance, whether visible or invisible, to steam; to be exhaled; to evaporate.|--|(n.) To emit vapor or fumes.|--|(n.) To talk idly; to boast or vaunt; to brag.|--|)


1. a visible exhalation, as fog, mist, steam, smoke, or noxious gas, diffused through or suspended in the air: the vapors rising from the bogs.

2. Physics. a gas at a temperature below its critical temperature.

3. a substance converted into vapor for technical or medicinal uses.

4. a combination of a vaporized substance and air.

5. gaseous particles of drugs that can be inhaled as a therapeutic agent.

6. Archaic. a strange, senseless, or fantastic notion. something insubstantial or transitory.

7. vapors, Archaic. mental depression or hypochondria. injurious exhalations formerly supposed to be produced within the body, especially in the stomach. verb (used with object)

8. to cause to rise or pass off in, or as if in, vapor; vaporize.

9. Archaic. to affect with vapors; depress. verb (used without object) 10. to rise or pass off in the form of vapor. 1

1. to emit vapor or exhalations. 1

2. to talk or act grandiloquently, pompously, or boastfully; bluster.


"There can be vapor depositions."
"There can be vapor units."
"There can be vapor presures."
"There can be vapor fires."
"There can be vapor deals."
"There can be vapor corps."
"There can be vapor build ups."
"vapors can be in center fuel tanks."
"vapors can be in center tanks."
"vapors can be in atmospheres."
"vapors can be near sites."
"vapors can be in charts."
"vapors can be in areas."
"vapors can be in airs."
"vapors can be from needs."
"vapors can be from marks."
"vapors can be from loads."
"vapors can be from barges."
"vapors can be at people."
"vapors can be above people."
"vapors can spread from barges."
"vapors can escape out of cars."
"vapors can escape out of cars."

Late Middle English: from Old French, or from Latin vapor ‘steam, heat’. The current verb sense dates from the early 17th century.

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