noun
- Fuel consisting of the remains of organisms preserved in rocks in the earth's crust with high carbon and hydrogen content. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). fossil fuel. Retrieved September 20, 2026, from http://smartdefine.org/fossil_fuel/definitions/1247830 |
| Chicago | WordNet. 2010. "fossil fuel" http://smartdefine.org/fossil_fuel/definitions/1247830 (accessed September 20, 2026). |
| Harvard | WordNet 2010, fossil fuel, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/fossil_fuel/definitions/1247830>. |
| MLA | WordNet. "fossil fuel" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/fossil_fuel/definitions/1247830> |