nonfissionable nonfissionable


  • (adj) not capable of undergoing fission


  1. Later a third nuclear ingredient, fissionable U-233, was made out of nonfissionable thorium.
  2. Nearly all the rest ot it is nonfissionable U-238.
  3. A reactor will be surrounded by a blanket of thorium or the plentiful but nonfissionable uranium isotope, U-238.
Word of the Day
untenable untenable
/ən ˈtɛ nə bəl /