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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 a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely attack with gas; subject to gas fumes; "The despot gassed the rebellious tribes" a fossil fuel in the gaseous state; used for cooking and heating homes a state of excessive gas in the alimentary canal a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines a pedal that controls the throttle valve; "he stepped on the gas" show off |
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