fissionable

[ fish-uh-nuh-buh l ]

/ ˈfɪʃ ə nə bəl /

capable of or possessing a nucleus or nuclei capable of undergoing fission: a fissionable nucleus; fissionable material.

Also fissile.

Origin of fissionable

First recorded in 1940–45; fission + -able

fis·sion·a·bil·i·ty, noun non·fis·sion·a·ble, adjective

The fissionable material was too valuable for other purposes.

Rip Foster in Ride the Gray Planet |Harold Leland Goodwin
"There are, or were, three chief sources of fissionable ores," Harkaman said.

Space Viking |Henry Beam Piper
Do you know why that planet was so extensively colonized by the Federation, when there don't seem to be any fissionable ores?

Space Viking |Henry Beam Piper
What makes the whole thing terrible is that the freighter is loaded with fissionable material exported from Ganymede.

Jack of No Trades |Charles Cottrell

The neutron source, the neutron reflector, and one piece of fissionable material were in place.

Rip Foster in Ride the Gray Planet |Harold Leland Goodwin

fissionable

/ (ˈfɪʃənəbəl) /

capable of undergoing nuclear fission as a result of any process Compare fissile (def. 1)

fissionability, noun