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authentication.

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

14 characters5 syllables approx.English language

Meaning & usage

noun/ɔːˌθɛntɪˈkeɪʃn̩/Received-Pronunciation/ɑˌθɛntɪˈkeɪʃn̩/cot-caught-merger/ɔˌθɛntɪˈkeɪʃn̩/

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

    countable · uncountable
    document authentication
    strong authentication

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

    countable · uncountable
    digital authentication
    Online banking uses two-factor authentication.

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

    countable · uncountable
Where this word comes from

Etymology tree Medieval Latin authenticōbor. English authenticate Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin -ātiōlbor. Old French -ationbor. Middle English -acioun English -ation English authentication From authenticate + -ation.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.