- any combustible organic material, as oil, coal, or natural gas, derived from the remains of former life.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for fossil fuel
All told, it takes 55 calories of fossil-fuel energy to get one calorie of beef.
Now, it takes 10 calories of fossil-fuel energy to produce a single calorie of food.
But behind the scenes, fossil-fuel companies were mobilizing to defuse this threat.The Year Without Summer and Climate Change Today
March 2, 2013
No doubt the fossil-fuel industry—the richest industry on earth, and most politically powerful—will fight back.Hurricane Sandy: The Last Straw on Climate Change
November 1, 2012
Also high on her agenda priorities is ending the federal government ban on fossil-fuel exploration.Kissing Nikki Haley’s Ring
October 17, 2011
- any naturally occurring carbon or hydrocarbon fuel, such as coal, petroleum, peat, and natural gas, formed by the decomposition of prehistoric organisms
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- A hydrocarbon fuel, such as petroleum, coal, or natural gas, derived from the accumulated remains of ancient plants and animals and used as fuel. Carbon dioxide and other greenhouse gases generated by burning fossil fuels are considered to be one of the principal causes of global warming.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.