ALL meanings of annihilation
an·ni·hi·la·tion
A a - noun annihilation the act of annihilating 3
- noun annihilation the destruction of a particle and its antiparticle when they collide. The annihilation of an electron with a positron generates two or, very rarely, three photons of annihilation radiation. The annihilation of a nucleon with its antiparticle generates several pions 3
- noun annihilation total destruction 1
- noun annihilation defeat 1
- noun annihilation The act of reducing to nothing, or nonexistence; or the act of destroying the form or combination of parts under which a thing exists, so that the name can no longer be applied to it; as, the annihilation of a corporation. 1
- noun annihilation an act or instance of annihilating, or of completely destroying or defeating someone or something: the brutal annihilation of millions of people. 1
- noun annihilation the state of being annihilated; total destruction; extinction: fear of nuclear annihilation. 1
- noun annihilation Physics. Also called pair annihilation. the process in which a particle and antiparticle unite, annihilate each other, and produce one or more photons. Compare positronium. the conversion of rest mass into energy in the form of electromagnetic radiation. 1
- noun annihilation The state of being annihilated. 0
- noun annihilation (physics) The process of a particle and its corresponding antiparticle combining to produce energy. 0