1 any substance burned as a source of heat or power, such as coal or petrol
2 the material, containing a fissile substance such as uranium-235, that produces energy in a nuclear reactor
3 something that nourishes or builds up emotion, action, etc.
vb , fuels, fuelling, fuelled
(U.S.) , fuels, fueling, fueled
4 to supply with or receive fuel (C14: from Old French feuaile, from feu fire, ultimately from Latin focus fireplace, hearth)
n any naturally occurring carbon or hydrocarbon fuel, such as coal, petroleum, peat, and natural gas, formed by the decomposition of prehistoric organisms
n a cell in which the energy produced by oxidation of a fuel is converted directly into electrical energy
n a can containing nuclear fuel for use in a reactor
n a system for introducing atomized liquid fuel under pressure directly into the combustion chambers of an internal-combustion engine without the use of a carburettor
n a liquid petroleum product having a flash point above 37.8°C: used as a substitute for coal in industrial furnaces, domestic heaters, ships, and locomotives
n a long tube, often made of a zirconium alloy and containing uranium-oxide pellets, that is stacked in bundles of about 200 to provide the fuel in certain types of nuclear reactor
n a fuel that provides nuclear energy, used in nuclear power stations, nuclear submarines, etc.
1 a domestic or industrial fuel, such as coal or coke, that is a solid rather than an oil or gas
2 (Also called)
solid propellant a rocket fuel that is a solid rather than a liquid or a gas