- complete destruction or obliteration；total defeat
- 1. complete destruction or obliteration the threat of global annihilation
- ▪ total defeat a show of independence is its only hope of avoiding annihilation in next year's elections
- 2. the conversion of matter into energy, especially the mutual conversion of a particle and an antiparticle into electromagnetic radiation.
- complete destruction or obliteration: the threat of global annihilation
Oxford American Dictionary