Definition of proxy noun from the Oxford Advanced American Dictionary

     

    proxy

     noun
    noun
    NAmE//ˈprɑksi//
     
    (pl. proxies)
     
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  1. 1[uncountable] the authority that you give to someone to do something for you, when you cannot do it yourself You can vote either in person or by proxy. a proxy vote
  2. 2[countable, uncountable] a person who has been given the authority to represent someone else Your proxy will need to sign the form on your behalf. They were like proxy parents to me. proxy for somebody She is acting as proxy for her husband.
  3. 3[countable] proxy for something (formal or technology) something that you use to represent something else that you are trying to measure or calculate The number of patients on a doctor's list was seen as a good proxy for assessing how hard they work.
See the Oxford Advanced Learner's Dictionary entry: proxy