authenticator

[ aw-then-ti-key-ter ]

noun
  1. a person or thing that authenticates.

  2. Cryptography. a code used to authenticate a previously transmitted code.

Origin of authenticator

1
First recorded in 1860–65; authenticate + -or2

Words Nearby authenticator

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use authenticator in a sentence