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English definition of “excommunicate”

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excommunicate

verb [T] uk   /ˌek.skəˈmjuː.nɪ.keɪt/ us  
When the Christian Church, especially the Roman Catholic Church, excommunicates someone, it refuses to give that person communion and does not allow them to be involved in the Church.
excommunication
noun [C or U] uk   /ˌek.skəˌmjuː.nɪˈkeɪ.ʃən/ us  
(Definition of excommunicate from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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