Definition of gas noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ɡæs//
    ; NAmE NAmE//ɡæs//
    (pl. gases, (less frequent)gasses) The power industry, Molecules and matter, Parts of a car
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    not solid/liquid
  1. 1  [countable, uncountable] any substance like air that is neither a solid nor a liquid, for example hydrogen and oxygen are both gases Air is a mixture of gases. CFC gases a gas bottle/cylinder (= for storing gas) see also greenhouse gas See related entries: Molecules and matter
  2. 2  [uncountable] a particular type of gas or mixture of gases used as fuel for heating and cooking a gas cooker/fire/furnace/oven/ring/stove a gas explosion/leak gas central heating (British English) Preheat the oven to gas mark 5 (= a particular temperature of a gas oven) see also Calor gas™, coal gas, natural gas See related entries: The power industry
  3. 3[uncountable] a particular type of gas used during a medical operation, to make the patient sleep or to make the pain less an anaesthetic gas Did you have gas or an injection? During the birth she was given gas and air. see also laughing gas
  4. 4[uncountable] a particular type of gas used in war to kill or injure people, or used by the police to control people a gas attack see also CS gas, mustard gas, nerve gas, tear gas
  5. in vehicle
  6. 5  (also gasoline) (both North American English) (British English petrol) [uncountable] a liquid obtained from petroleum, used as fuel in car engines, etc. a gas station a gas pump to fill up the gas tank See related entries: The power industry, Parts of a car
  7. 6the gas [singular] (especially North American English) = gas pedal Step on the gas, we're late.
  8. fun
  9. 7[singular] (especially North American English) a person or an event that is fun The party was a real gas.
  10. in stomach
  11. 8(North American English) (British English wind) [uncountable] air that you swallow with food or drink; gas that is produced in your stomach or intestines that makes you feel uncomfortable
  12. Word Originmid 17th cent.: invented by J. B. van Helmont (1577–1644), Belgian chemist, to denote an occult principle which he believed to exist in all matter; suggested by Greek khaos ‘chaos’, with Dutch g representing Greek kh.Extra examples Chinese gas reserves are now being tapped. He hit the gas pedal and headed off. I lit the gas and put the soup on to warm. I prefer to cook with gas. It gives off a poisonous gas as it decomposes. Local gas works were closed as natural gas became available. Millions of Jews were sent to the gas chambers by the Nazis. Noxious gases had built up in the sewer. Police used water cannon and tear gas against demonstrators. Set the oven at gas mark 4. Toxic gases can escape through one of the pipes. We stopped at a gas station to fill up. greenhouse gas emissions pollution from greenhouse gases tapping the North Sea gas fields All the apartments are fitted with gas central heating. He still had plenty of gas in the tank. Much of Britain’s energy is supplied by natural gas from the North Sea. Preheat the oven to gas mark 5. Producing methane gas from organic waste is another extremely practical use of resources. The explosion was caused by a gas leak. We have a gas cooker in the kitchen.Idioms (informal) to be doing something very well and successfully
See the Oxford Advanced American Dictionary entry: gas