The Collaborative International Dictionary
Nuclear weapon \Nu"cle*ar wea"pon\, n. A weapon of great explosive power, such as an atomic bomb or a hydrogen bomb, which depends for most of its explosive power on the release of energy from within atomic nuclei by a nuclear reaction. A fission weapon or a fusion weapon. The term includes atomic shells for cannon.
Usage examples of "fission weapon".
That means a third-generation fission weapon, or more likely, a multi-stage fusion device.
Government's very hush-hush weapons research establishment south of the town of columbia, an establishment concerned with the evolving, as had only become known in the past week or so, of some sort of small fission weapon for use by either fighter planes or mobile rocket launchers in local tactical nuclear wars.
Sure, they'll be there to take your claim registrations, hand out the official map, run a scintillometer over you to make sure you aren't packing a fission weapon in your hip pocket—.