an extremely destructive type of bomb, the power of which results from the immense quantity of energy suddenly released when a very rapid chain reaction of nuclear fission is set off by neutron bombardment in the atoms of a charge of plutonium (primarily Pu-239) or uranium (U-235)
"atomic bomb." YourDictionary, n.d. Web. 16 September 2018. <http://www.yourdictionary.com/atomic-bomb>.
atomic bomb. (n.d.). Retrieved September 16th, 2018, from http://www.yourdictionary.com/atomic-bomb
An explosive weapon of great destructive power derived from the rapid release of energy in the fission of heavy atomic nuclei, especially of uranium-235 or plutonium-239. Also called A-bomb . Also called atom bomb . Also called fission bomb .