The Collaborative International Dictionary
fusion weapon
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 "fusion weapon".
President, ladies and gentlemen, I want to start by stating emphatically that it was not the United States who detonated this pure-fusion weapon.
Or the panorama of carnage at a playground on the outskirts of a fusion weapon blast.
It was still less than the final figure for the installed beanstalk, but already the stored energy exceeded that of any fusion weapon.