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Dictionary definition for: Gas
1. (n) the state of matter distinguished from the solid and liquid states by: relatively low density and viscosity; relatively great expansion and contraction with changes in pressure and temperature; the ability to diffuse readily; and the spontaneous tendency
2. (v) attack with gas; subject to gas fumes; "The despot gassed the rebellious tribes"
3. (n) a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
5. (n) a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines
6. (n) a state of excessive gas in the alimentary canal
7. (n) a pedal that controls the throttle valve; "he stepped on the gas"
8. (n) a fossil fuel in the gaseous state; used for cooking and heating homes
WordNet 2.1 Copyright Princeton University. All rights reserved.