TOP

Definition of fossil fuel noun from the Oxford Advanced Learner's Dictionary

fossil fuel

noun
 
/ˈfɒsl fjuːəl/
 
/ˈfɑːsl fjuːəl/
[countable, uncountable]
jump to other results
  1. fuel such as coal or oil that was formed over millions of years from parts of dead animals or plants
    • Carbon dioxide is produced in huge amounts when fossil fuels are burned.
    • Fossil fuel reserves are rapidly being depleted.
    • Gas is the only fossil fuel without environmental problems.
    compare biomassTopics The environmentb2
See fossil fuel in the Oxford Advanced American DictionarySee fossil fuel in the Oxford Learner's Dictionary of Academic English
halfway
adverb
 
 
From the Word list
Oxford 5000
C1
Oxford Learner's Dictionaries Word of the Day