plural gases also gasses
Definition of gas
(Entry 1 of 2)
1 : a fluid (such as air) that has neither independent shape nor volume but tends to expand indefinitely
b : a gaseous product of digestion also : discomfort from this
c : a gas or gaseous mixture used to produce anesthesia
d : a substance that can be used to produce a poisonous, suffocating, or physically irritating atmosphere
3 : empty talk : bombast His talk about quitting his job was all gas.
5 : driving force : energy I was young, and full of gas— H. L. Mencken ran out of gas in the seventh inning
7 baseball, informal : fast and powerfully thrown pitches : smoke sense 8 That's Nate on the mound in the glossy photo in his dad's office, throwing gas in some Little League game.— Austin Murphy
gas
verbgassed; gassing
Definition of gas (Entry 2 of 2)
1 : to talk idly or garrulously
2 : to give off gas (see gas entry 1 sense 1)
3 : to fill the tank (as of an automobile) with gasoline
—usually used with up
1 : to supply with gas or especially gasoline
gas up the car
2a : to treat chemically with gas
b : to poison or otherwise affect adversely with gas
3 slang : to please greatly
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Time Traveler for gas
The first known use of gas was in 1779
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