annihilation
//əˌnaɪ.əˈleɪ.ʃən//
Noun
annihilationSingular
annihilationsPlural
1
The complete destruction or obliteration of something.
The nuclear bomb caused the complete annihilation of the city.
2
Total defeat or crushing of an opponent or enemy.
The team suffered complete annihilation in the championship game.
3
(Physics) The process in which a particle and its antiparticle collide and are converted into energy.
When an electron meets a positron, annihilation occurs and gamma rays are produced.