# OIDC

CEFR C2 · Noun

Source: https://englishreference.com/word/oidc
Updated: 2026-07-22

## Definition

Stands for OpenID Connect. A way for websites and apps to check who you are by using an account you already have, like Google or Microsoft.

For teachers: Abbreviation for OpenID Connect. An identity layer built on top of the OAuth 2.0 protocol that allows clients to verify the identity of an end-user based on the authentication performed by an authorization server.

## Examples

- The app uses OIDC to let you log in with your email.
- Developers often choose OIDC because it provides a standardized way to receive basic profile information about the user after they authenticate.
- By implementing OIDC, the platform offloads the complexities of credential management to trusted identity providers while maintaining a seamless single sign-on experience for its global user base.

## Usage notes

- Commonly used in technical documentation regarding web security and authentication; often functions as a modifier in the phrase 'OIDC provider'.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.