noun
1. One who authenticates.
noun
2. A feature that shows something to be authentic.
example
3. (acting as the "authenticator" in that transaction).
example
4. Xbox had 3RL, Forums are down, and Wow is having authenticator issues …
example
5. "There have been fakes for hundreds of years, certainly in France," says wine authenticator Maureen Downey, owner of Chai Consulting in San Francisco.