noun, verb, slang ·Moderate ·College level

Definitions

Noun

1. 1
   Abbreviation of atomic bomb; a weapon that derives its energy from nuclear reactions and has enormous destructive power; in particular, those that rely on the uncontrolled explosive chain reaction of nuclear fission. abbreviation, alt-of, slang
2. 2
   a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239) wordnet

Verb

1. 1
   To bomb with an atom bomb. slang

Synonyms

All synonyms

atom bombatomic bombfission bombatomic bombatomic warheadbomb

Example

More examples

"An A-bomb is a terrible weapon."

Etymology

Shortened form of atomic bomb.

Related phrases

A-bomber

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.