annihilation

noun4

1. •
   The act of destroying or otherwise turning into nothing, or nonexistence.
2. •
   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.
3. •
   The state of being annihilated.
4. •
   The process of a particle and its corresponding antiparticle combining to produce energy.