Cite
 

Meaning of nuclear fuel

nu'clear fu'el

Pronunciation: [key]
  1. fissile or fertile material that undergoes fission in a nuclear reactor.
  2. any light element, as hydrogen or helium, that undergoes fusion and gives off energy within the interior of stars.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.