a pedal that controls the throttle valve | the blood group whose red cells carry neither the A nor B antigens |
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 | the 15th letter of the Roman alphabet |
a state of excessive gas in the alimentary canal | a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust |
a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely | |
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 fossil fuel in the gaseous state; used for cooking and heating homes | |