authenticator
Americannoun
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a person or thing that authenticates.
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Cryptography. a code used to authenticate a previously transmitted code.
Etymology
Origin of authenticator
First recorded in 1860–65; authenticate + -or 2
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The bag is ready for purchase where it would previously also be reviewed by a more senior authenticator.
From The Wall Street Journal ● Jan. 21, 2026
Elsewhere in the warehouse, an authenticator uses a device smaller than a stapler to scan a Louis Vuitton tote to help determine whether the leather, stitching and branding are authentic.
From The Wall Street Journal ● Jan. 21, 2026
He also recommended adding a PIN number to the sim card, which can be done in a phone's settings, and the use of authenticator apps to generate random codes, instead of ones sent by text.
From BBC ● Mar. 3, 2025
Once the hologram was affixed, the authenticator handed it back to Smith, who said, “I’m gonna give it to Walker.”
From Los Angeles Times ● Oct. 31, 2024
The authenticator was in two parts, each requiring its own style for presentation.
From The Universe — or Nothing by Moldeven, Meyer
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
