atomic bomb

noun

1
: a bomb whose violent explosive power is due to the sudden release of energy resulting from the splitting of nuclei of a heavy chemical element (such as plutonium or uranium) by neutrons in a very rapid chain reaction

called also atom bomb

2
: a nuclear weapon (such as a hydrogen bomb)

Examples of atomic bomb in a Sentence

Recent Examples on the Web
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That’s about 500 times the power of the atomic bomb dropped on Hiroshima, according to Wired. Jamie Carter, Forbes.com, 3 Apr. 2025 The Enola Gay — which dropped the atomic bomb on Hiroshima, Japan, in August 1945 — was named for Enola Gay Tibbets, the mother of its pilot, Colonel Paul Tibbets. Meredith Kile, People.com, 19 Mar. 2025 The Associated Press reported, for example, that photos were flagged on the Enola Gay, the B-29 bomber that dropped an atomic bomb on Hiroshima. Eduardo Cuevas, USA TODAY, 18 Mar. 2025 Meanwhile, the girls get hit with some atomic bombs. Charlotte Walsh, Vulture, 12 Mar. 2025 See All Example Sentences for atomic bomb

Word History

First Known Use

1914, in the meaning defined at sense 1

Time Traveler
The first known use of atomic bomb was in 1914

Cite this Entry

“Atomic bomb.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/atomic%20bomb. Accessed 11 Apr. 2025.

Kids Definition

atomic bomb

noun
1
: a bomb whose violent explosive power is due to the sudden release of energy resulting from the splitting of nuclei of a heavy chemical element (as plutonium or uranium) by neutrons

called also atom bomb

2

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