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View synonyms for gas

gas

[ gas ]

noun

, plural gas·es or gas·ses.
  1. Physics. a substance possessing perfect molecular mobility and the property of indefinite expansion, as opposed to a solid or liquid.
  2. any such fluid or mixture of fluids.
  3. any such fluid used as an anesthetic, as nitrous oxide:

    Did the dentist give you gas for your extraction?

  4. any such combustible fluid used as fuel:

    Light the gas in the oven.

  5. Automotive.
    1. Also called gas pedal. the foot-operated accelerator of an automotive vehicle:

      Take your foot off the gas.

  6. Coal Mining. an explosive mixture of firedamp with air.
  7. an aeriform fluid or a mistlike assemblage of fine particles suspended in air, used in warfare to asphyxiate, poison, or stupefy an enemy.
  8. Slang.
    1. empty talk.
    2. a person or thing that is very entertaining, pleasing, or successful:

      The party was an absolute gas, and we loved it.

    3. a person or thing that affects one strongly.


verb (used with object)

, gassed, gas·sing.
  1. to supply with gas.
  2. to overcome, poison, or asphyxiate with gas or fumes.
  3. to singe (yarns or fabrics) with a gas flame to remove superfluous fibers.
  4. to treat or impregnate with gas.
  5. Slang.
    1. to talk nonsense or falsehood to.
    2. to amuse or affect strongly:

      Her weird clothes really gas me.

verb (used without object)

, gassed, gas·sing.
  1. to give off gas, as a storage battery being charged.
  2. Slang.
    1. to indulge in idle, empty talk.
    2. to become drunk (often followed by up ).

verb phrase

  1. to fill the gasoline tank of an automobile, truck, or other vehicle.

gas

/ ɡæs /

noun

  1. a substance in a physical state in which it does not resist change of shape and will expand indefinitely to fill any container. If very high pressure is applied a gas may become liquid or solid, otherwise its density tends towards that of the condensed phase Compare liquid solid
  2. any substance that is gaseous at room temperature and atmospheric pressure
  3. any gaseous substance that is above its critical temperature and therefore not liquefiable by pressure alone Compare vapour
    1. a fossil fuel in the form of a gas, used as a source of domestic and industrial heat See also coal gas natural gas
    2. ( as modifier )

      a gas cooker

      gas fire

  4. a gaseous anaesthetic, such as nitrous oxide
  5. mining firedamp or the explosive mixture of firedamp and air
  6. the usual US, Canadian, and New Zealand word for petrol See also gasoline
  7. step on the gas informal.
    1. to increase the speed of a motor vehicle; accelerate
    2. to hurry
  8. a toxic or suffocating substance in suspension in air used against an enemy
  9. informal.
    idle talk or boasting
  10. slang.
    a delightful or successful person or thing

    his latest record is a gas

  11. an informal name for flatus
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


verb

  1. tr to provide or fill with gas
  2. tr to subject to gas fumes, esp so as to asphyxiate or render unconscious
  3. intr to give off gas, as in the charging of a battery
  4. tr (in textiles) to singe (fabric) with a flame from a gas burner to remove unwanted fibres
  5. informal.
    intrfoll byto to talk in an idle or boastful way (to a person)
  6. slang.
    tr to thrill or delight
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

gas

/ găs /

  1. One of four main states of matter , composed of molecules in constant random motion. Unlike a solid, a gas has no fixed shape and will take on the shape of the space available. Unlike a liquid, the intermolecular forces are very small; it has no fixed volume and will expand to fill the space available.


gas

  1. In physics , one of the phases of matter . The atoms or molecules in gases are more widely spaced than in solids or liquids and suffer only occasional collisions with one another.


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Derived Forms

  • ˈgasless, adjective
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Other Words From

  • gas·less adjective
  • non·gas noun plural nongases
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Word History and Origins

Origin of gas1

First recorded in 1650–60; coined by J. B. van Helmont (1577–1644), Flemish chemist; suggested by Greek cháos “atmosphere”
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Word History and Origins

Origin of gas1

C17 (coined by J. B. van Helmont (1577–1644), Flemish chemist): modification of Greek khaos atmosphere
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Idioms and Phrases

Idioms
  1. step on the gas, Informal. to increase the speed of one's movement or activity; hurry:

    We'd better step on the gas or we'll be late for the concert.

More idioms and phrases containing gas

In addition to the idiom beginning with gas , also see cook with gas ; run out of steam (gas) .
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Example Sentences

Security officials told Agence France-Presse that the gas station manager said he had recognized the two men.

Unconfirmed reports in the French media claimed that the brothers were spotted at a gas station in northern France on Thursday.

Total oil production figures include crude oil, natural gas liquids, and other liquid energy products.

On top of oil, the United States produces significantly more natural gas than Saudi Arabia.

Her slight miscalculation of how to fix the situation leads to her driving around the gas pump.

For comparison, the gas may be passed through a test-tube containing an equal amount of distilled water.

It is allowed to cool, and hydrogen sulphid gas is passed through it for about five minutes.

You could not see the water till you got close up, and at a distance only the rows of gas jets were apparent.

Gas, it is clear, could not be carried into a hostile country or into remote and nearly inaccessible districts.

In its pure state it is a transparent and colourless gas, having a peculiar pungent smell, and highly soluble in water.

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Related Words

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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