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English definition of “sister”

sister

adjective [before noun]
 
 
/ˈsɪstər/
used to describe one of the organizations or companies in a pair or group of similar organizations when referring to it in relation to the others: The competition is being run in conjunction with our sister publication Money Observer. sister company/organization
→ Compare parent company
(Definition of sister from the Cambridge Business English Dictionary © Cambridge University Press)
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