fissile

in radioanalytical chemistry
https://doi.org/10.1351/goldbook.F02394
  1. Of a nuclide: capable of undergoing fission by interaction with (slow) neutrons.
  2. Of a material: containing one or more fissile nuclides.
Source:
PAC, 1982, 54, 1533. (Glossary of terms used in nuclear analytical chemistry (Provisional)) on page 1542 [Terms] [Paper]