authentication

American  

[aw-then-ti-key-shuhn] / ɔˌθɛn tɪˈkeɪ ʃən /

noun

1. the act or process of establishing something as genuine or authoritative.

   The requisite authentication was performed on each piece before it was donated to the museum.

2. Also called electronic authentication.  Digital Technology. the act or process of establishing identity and verifying permission to access an electronic device or computer network (often used attributively): biometric authentication;

   password authentication;

   biometric authentication;

   authentication credentials.

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Other Word Forms

• reauthentication
  noun

Etymology

Origin of authentication

First recorded in 1600–20; authenticat(e) ( def. ) + -ion ( def. )

Example Sentences

The commission found that a lack of safeguards, including poor management of authentication signing keys and access controls, had resulted in the personal data of around 37.5 million users being exposed.

From BBC • Jun. 11, 2026

Downey, who conducts seminars on wine fraud and authentication training, has also been developing a blockchain registry for fine wine.

From The Wall Street Journal • May 31, 2026

“In an agentic world, value accrues to the platform that controls user intent, personal context, app access, permissions, identity, authentication, payments, and trust,” said BofA’s senior equity research analyst Wamsi Mohan.

From Barron's • May 26, 2026

Since at least the Obama administration, the U.S. had been largely focused on defensive measures to protect elections, like multifactor authentication and encryption, which make it harder to compromise systems in the first place.

From Salon • May 21, 2026

“I mean...I’d like it if all of you started using Tor, maybe set up some two-factor authentication on your devices, took some steps to protect your own privacy.”

From "Anger Is a Gift" by Mark Oshiro

Related Words

• certification
• verification