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单词 contraposition
释义

WordReference Random House Unabridged Dictionary of American English © 2024
con•tra•po•si•tion  (kon′trə pə zishən),USA pronunciation n. 
  1. placement opposite or against.
  2. opposition, contrast, or antithesis.
  3. Philosophy[Logic.]the inference drawn from a proposition by negating its terms and changing their order, as by inferring "Not B implies not A'' from "A implies B.''
  • Late Latin contrāposition- (stem of contrāpositiō). See contra-1, position
  • 1545–55

Collins Concise English Dictionary © HarperCollins Publishers::
contraposition /ˌkɒntrəpəˈzɪʃən/ n
  1. the act of placing opposite or against, esp in contrast or antithesis
  2. the derivation of the contrapositive of a given categorial proposition
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