1. Physics. 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.
[ 1945-50 ]
1. Physics. 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.
[ 1945-50 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012