gas
n 1: 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 to become
distributed uniformly throughout any container
2: a fluid in the gaseous state having neither independent
shape nor volume and being able to expand indefinitely
3: a volatile flammable mixture of hydrocarbons (hexane and
heptane and octane etc.) derived from petroleum; used
mainly as a fuel in internal-combustion engines [syn: gasoline,
gasolene, petrol]
4: a state of excessive gas in the alimentary canal [syn: flatulence,
flatulency]
5: a pedal that controls the throttle valve; "he stepped on the
gas" [syn: accelerator, accelerator pedal, gas pedal,
throttle, gun]
6: a fossil fuel in the gaseous state; used for cooking and
heating homes [syn: natural gas]
v 1: attack with gas; subject to gas fumes; "The despot gassed
the rebellious tribes"
2: show off [syn: boast, tout, swash, shoot a line, brag,
blow, bluster, vaunt, gasconade]
[also: gassing, gasses, gassed, gasses (pl)]