Atomic bomb


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.
Contemporary Examples

Fat Boy, like the atomic bomb, is both a miracle of human ingenuity and a force of annihilation.
American Dreams: ‘The Mosquito Coast’ by Paul Theroux Nathaniel Rich September 19, 2012

Finally there was the atomic bomb (and the Cold War it created): machine threatened to annihilate all of mankind.
How ‘Her’ Gets the Future Right Andrew Romano December 20, 2013

In another strip, a photographer decides to sell a photo he took in the aftermath of the atomic bomb.
The Working Man’s Graphic Novel Liz Goodwin April 30, 2009

It would then need another two to five years to build an atomic bomb.
Stop Talking Down to Iran Reza Aslan April 17, 2010

Although in that film, the briefcase contained an atomic bomb.
The Secrets of ‘Pulp Fiction’: 20 Things You Didn’t Know About the Movie on Its 20th Anniversary Marlow Stern October 18, 2014

Historical Examples

I’m the only man in the whole universe that’s ever played to a packed house sitting on top of an atomic bomb!
Stand by for Mars! Carey Rockwell

Last week he insisted on it and I blew up like an atomic bomb.
Subspace Survivors E. E. Smith

From 1945 to 1949, the United States was sole possessor of the atomic bomb.
State of the Union Addresses of Harry S. Truman Harry S. Truman

Your ancestors were ten miles or so from where atomic bomb went off.
Thy Rocks and Rills Robert Ernest Gilbert

Los Alamos scientists devised two designs for an atomic bomb–one using the uranium and another using the plutonium.
Trinity [Atomic test] Site White Sands Missile Range Public Affairs Office

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 bombs Also called A-bomb, fission bomb Compare fusion bomb
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 (A-bomb)

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

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

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