1. [syn: atom bomb, atomic bomb, A-bomb, fission bomb, plutonium bomb]
The Collaborative International Dictionary of English v.0.48:
Atom bomb \At"om bomb`\, Atomic bomb \A*tom"ic bomb`\n.
a bomb of great power in which the explosive energy is
derived from the nuclear fission of a fissionable material,
such as plutonium or uranium-235. It is a type of nuclear
weapon. The strength of an atom bomb is measured in kilotons,
i.e. the equivalent energy released by explosion of a
thousand tons of TNT. The first atomic bomb was manufactured
Syn: A-bomb, fission bomb.
WordNet (r) 3.0 (2006):
n 1: 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, fission bomb, plutonium bomb]