kasekinenryō
1. fossil fuel
Noun
#37959
1. fossil fuel
1. fossil
2. petrifaction; petrification
1. nuclear fuel
1. fuel
1. Not a fossil.; Not fossilized.
1. Fossil.; It is a fossil.
1. with fossils; made of fossils
1. Was a fossil.
1. Was not a fossil.; It wasn't a fossil.
1. Not a fossil.; Is not a fossil.