Final Death

From the White Wolf Wiki, the most complete White Wolf reference

Final Death is a term used by vampires to refer to permanent death, as opposed to torpor or their first death as part of the Embrace. By nature, vampires are incredibly resilient and tend to recover from wounds that would kill a mortal several times over. However, there is a limit to the punishment their body can take, and specific forms of damage, such as from fire or sunlight, can lead to true destruction. Final Death is not to be confused with Diablerie, which not only inflicts Final Death on the vampire's body, but devours the soul and perhaps everything that makes the victim who they were.