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Definition of "authentication" []

  • Something which validates or confirms the authenticity of something (noun)
  • Proof of the identity of a user logging on to some network (noun)
  • A hallmark or assay-mark on a piece of metalwork (noun) : Text is available under the Creative Commons Attribution-ShareAlike License

Use "authentication" in a sentence
  • "PCGS is the world's largest rare coin authentication company and a division of Collectors Universe, Inc."
  • "In addition, there are reliable rare coin authentication companies whose certified coins are guaranteed for authenticity."
  • "Re-authentication is required if the game is re-installed on a previously authorized machine for any reason."