01 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 ura…
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1.
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 in 1945.