atomic bomb

or atom bomb

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noun

a bomb whose potency is derived from nuclear fission of atoms of fissionable material with the consequent conversion of part of their mass into energy.

a bomb whose explosive force comes from a chain reaction based on nuclear fission in U-235 or plutonium.

Origin of atomic bomb

First recorded in 1910–15

Also called A-bomb, fission bomb.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for atomic bomb

A-bomb, nuke, H-bomb

British Dictionary definitions for atomic bomb

atomic bomb

atom bomb

noun

a type of bomb in which the energy is provided by nuclear fission. Uranium-235 and plutonium-239 are the isotopes most commonly used in atomic bombsAlso called: A-bomb, fission bomb Compare fusion bomb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

atomic bomb in Science

atomic bomb

A very destructive bomb that derives its explosive power from the fission of atomic nuclei. Atomic bombs usually have plutonium 239 or uranium 235 as their fissionable material. Also called atom bomb

atomic bomb in Culture

atomic bomb

A nuclear weapon whose enormous explosive power results from the sudden release of energy from a fission reaction. (See also Hiroshima (see also Hiroshima), hydrogen bomb, Nagasaki, and Strategic Arms Limitation Talks [SALT].)

atomic bomb

A bomb that is powered by nuclear fission, and therefore produces a quick release of energy and great destruction.