| English | Catalan |
| animal dung as fuel Excrement from animals that may be dried and burned to generate energy or converted to liquid or gaseous fuels, such as methane, through chemical processes | fems com a combustible |
| desulphurisation of fuel Removal of sulfur from fossil fuels (or removal of sulfur dioxide from combustion fuel gases) to reduce pollution | dessulfurització del combustible |
| diesel fuel Heavy oil residue used as fuel for certain types of diesel engines | gasoil |
| domestic fuel Fuels obtained from different sources that are used for domestic heating | combustible per a ús domèstic |
| domestic fuel oil Liquid petroleum product used in domestic heaters | fueloil per a ús domèstic |
| fossil fuel The energy-containing materials which were converted over many thousands of years from their original form of trees, plants and other organisms after being buried in the ground. Physical and chemical processes occurred in the Earth's crust that changed them into coal, peat, oil or natural gas | combustible fòssil |
| fuel additive Substance (such as tetraethyl lead) which is added to petrol to prevent knocking | additiu de combustible |
| fuel alcohol Alternative source of energy for motor vehicles. It is produced by fermentation of sugar cane by the yeast Saccharomyces cerevisiae | alcohol de combustible |
| fuel composition | composició de combustible |
| fuel consumption The amount of fuel utilized | consum de combustible |
| fuel oil A liquid product burned to generate heat, exclusive of oils with a flash point below 38°C; includes heating oils, stove oils, furnace oils, bunker fuel oils | fueloil |
| fuel tank installation The operating, fuel-storage component of a fuel system | instal·lació del tanc de combustible |
| fuel wood Wood used for heating | llenya |
| motor fuel Any gaseous or liquid flammable fuel that burns in an internal combustion engine | carburant |
| non-polluting fuel Clean fuel that does not release polluting emissions in the environment, such as methane | combustible no contaminant |
| nuclear fuel Nuclear fuels are obtained from inorganic minerals extracted by mining. Although they are at least partially consumed when used in nuclear reactors for the production of heat, they differ from fossil fuels in the way they release energy. Burning of fossil fuels, such as coal, oil and gas, is a chemical reaction. Nuclear fuels, such as uranium, are destroyed by a process of spontaneous disintegration, called fission, and prompted by natural radioactivity. If the process is left to occur naturally in uranium-bearing rock, the rate of change is imperceptibly small. In a man-made nuclear reactor the energy-releasing processes of disintegration, which in the natural state happen slowly over thousands of millions of years, are compressed into minutes. The release of energy is harnessed to generate steam which drives electricity generators | combustible nuclear |
| nuclear fuel element A piece of nuclear fuel which has been formed and coated, and is ready to be placed in a reactor fuel assembly | element combustible nuclear |
| refuse derived fuel Fuel produced from domestic refuse, after glass and metals have been removed from it, by compressing it to form briquettes used to fuel boilers | combustible de reutilització |
