| Subject | Danish | English |
| econ. | fossilt brændsel | fossil fuel |
| environ. | fossilt brændstof | 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 |
| energ.ind. | fossilt fyret kraftværk | fossil-fired plant |
| energ.ind. | fossilt fyret kraftværk | fossil-fired power plant |
| energ.ind. | fossilt fyret kraftværk | fossil fuel power plant |
| chem. | fossilt kiselmel | siliceous fossil meal |
| life.sc., el. | fossilt vand | trapped water |
| life.sc., el. | fossilt vand | fossil water |
| energ.ind. | konventionelt fossilt brændsel | conventional fossil fuel |
| energ.ind. | konventionelt fossilt brændstof | conventional fossil fuel |
| econ., energ.ind. | skift til brændsler, der indeholder mindre fossilt kulstof | decarbonisation |