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English definition of “CUP”

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noun [U] uk   /ˌsiː ˌjuː ˈpiː/ specialized us  
abbreviation for carcinoma of uncertain primary origin: the situation when cancer is found in one or more places in the body but the place where it started is unknown
(Definition of CUP noun from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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