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English definition of “auxiliary”

auxiliary

adjective
 
 
/ɔːɡˈzɪliəri/
used in addition to the main team, organization, system, etc. in order to give extra help and support: auxiliary staff/police/nurses About 4800 unarmed auxiliary police officers work on a volunteer basis with the New York Police Department.
(Definition of auxiliary adjective from the Cambridge Business English Dictionary © Cambridge University Press)
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