Obliteration

noun

1. The act of obliterating or effacing; a blotting out or wearing out; effacement; extinction.
2. In entomology, the state of being obliterate; also, an obliterated part of a suture, margin, etc.
3. In pathology, the closure of a canal or cavity of the body by adhesion of its walls.
4. The act of obliterating, or the state of being obliterated; extinction.
5. The total destruction of something