Which of the following best describes a gas?
an airlike fluid substance which expands freely to fill any space available, irrespective of its quantity. "hot balls of gas that become stars" a flammable gas used as a fuel. a gaseous anesthetic such as nitrous oxide, used in dentistry. gas or vapor used as a poisonous agent to kill or disable an enemy in warfare. NORTH AMERICAN gas generated in the alimentary canal; flatulence. MINING an explosive mixture of firedamp with air. 2. NORTH AMERICANinformal short for gasoline. used in reference to power or the accelerator of an automobile. "I ordered my friend to step on the gas" 3. informal a person or thing that is entertaining or amusing. "the party would be a gas" verb verb: gas; 3rd person present: gases; past tense: gassed; past participle: gassed; gerund or present participle: gassing 1. kill or harm by exposure to poisonous gas. (of a storage battery or dry cell) give off gas. 2. NORTH AMERICANinformal fill the tank of (an engine or motor vehicle) with gasoline. "after gassing up the car, he went into the restaurant"
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