noun
a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239)
• Syn: ↑atom bomb, ↑atomic bomb, ↑A-bomb, ↑plutonium bomb
• Hypernyms: ↑nuclear weapon, ↑atomic weapon, ↑bomb
• Hyponyms: ↑clean bomb, ↑dirty bomb, ↑neutron bomb
• Part Meronyms: ↑plutonium trigger, ↑plutonium pit
Useful english dictionary. 2012.