authentication — English Dictionary

Noun

1. Something which validates or confirms the authenticity of something; or the process of doing so.

   Usage

   • Countable
   • Uncountable

   Examples

   document authentication

   strong authentication

   More examples (1)

   The museum required scientific tests for the authentication of the painting.

2. Proof of identity required by a user to log on to some network or access some resource.

   Usage

   • Countable
   • Uncountable

   Examples

   digital authentication

   Online banking uses two-factor authentication.

3. A hallmark or assay-mark on a piece of metalwork.

   Usage

   • Countable
   • Uncountable

Noun

1. a mark on an article of trade to indicate its origin and authenticity

   Synonyms

   hallmarkassay-mark

   Broader terms

   markermarkingmark

2. validating the authenticity of something or someone

   Synonyms

   certification

   Broader terms

   validationproofsubstantiation