Termination implant

A termination implant was a piece of Dominion technology. Such implants were embedded in the brain stem of Vorta and, when activated, killed the individual.

In 2375, Weyoun Six activated his termination implant as a way to save Odo from pursuing Jem'Hadar. Weyoun found that the process was not painless, as the Founders had told him. 

One of the clones of Vannis intentionally activated her termination implant to kill herself, as did Elani.