- capable of or possessing a nucleus or nuclei capable of undergoing fission: a fissionable nucleus; fissionable material.
Origin of fissionable
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- capable of undergoing nuclear fission as a result of any processCompare fissile (def. 1)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012