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Definition of authentication noun from the Oxford Advanced Learner's Dictionary

authentication

noun
 
/ɔːˌθentɪˈkeɪʃn/
 
/ɔːˌθentɪˈkeɪʃn/
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  1. [uncountable] the act of proving that something is real, true or what somebody claims it is
    • When buying jewellery, make sure you get a certificate of authentication.
  2. [uncountable, countable] the act of proving that somebody is a particular person
    • User authentication is often performed with passwords.
    see also multi-factor authentication
alloy
noun
 
 
From the Topic
Physics and chemistry
C2
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