contraposition

[ kon-truh-puh-zish-uh n ]
/ ˌkɒn trə pəˈzɪʃ ən /

noun

placement opposite or against.
opposition, contrast, or antithesis.
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.”

Origin of contraposition

First recorded in 1545–55, contraposition is from the Late Latin word contrāposition- (stem of contrāpositiō). See contra1, position
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for contraposition

British Dictionary definitions for contraposition

contraposition

/ (ˌkɒntrəpəˈzɪʃən) /

noun

the act of placing opposite or against, esp in contrast or antithesis
logic the derivation of the contrapositive of a given categorial proposition
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012