nonfissionable
adjective
non·fis·sion·able ˌnän-ˈfi-shə-nə-bəl 
-zhə-;
-ˈfish-nə-,
-ˈfizh-
: not capable of undergoing fission : not fissionable
nonfissionable uranium
Word History
First Known Use
1946, in the meaning defined above
- microceratous
- microcercous
- microchaeta
- microchaetae
- microchemical
- microchemistries
- microchemistry
- microchemists
- microchip
- microchips
- Microchiroptera
- microchiropterae
- microchiropteran
- microchiropteras
- microchiropterous
- microchronometer
- microcircuit
- microcircuitries
- microcircuitry
- microcircuits
- microcirculation
- microcirculations
- microcirculatory
- Microcitrus
- microclimate