contraposition

[ kon-truh-puh-zish-uhn ]
/ 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.”

QUIZZES

QUIZ YOURSELF ON THESE WORDS FROM BROWN GIRL DREAMING!

Visualize yourself passing this quiz on words from Jacqueline Woodson’s exquisite verse novel “Brown Girl Dreaming,” and then take the quiz to prove you can do it! (Because you can.)
Question 1 of 10
What does “barren” mean?

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. 2020

Example sentences 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