annihilation: Meaning and Definition of
Pronunciation: (u-nī"u-lā'shun), [key]
- the act or an instance of annihilating.
- the state of being annihilated; extinction; destruction.
- Also calledpair annihilation.the process in which a particle and antiparticle unite, annihilate each other, and produce one or more photons. Cf. positronium.
- the conversion of rest mass into energy in the form of electromagnetic radiation.
- annihilation (Thesaurus)