fissile

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fissile

1. Brit capable of undergoing nuclear fission as a result of the impact of slow neutrons
2. US and Canadian capable of undergoing nuclear fission as a result of any process
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

fissile

[′fis·əl]
(geology)
Capable of being split along the line of the grain or cleavage plane.
(nucleonics)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.