contraposition

[ kon-truh-puh-zish-uh n ]
/ ˌkɒn trə pəˈzɪʃ ən /
SEE SYNONYMS FOR contraposition ON THESAURUS.COM

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

Words nearby contraposition

contranym, contraoctave, contraorbital, contraplete, contrapose, contraposition, contrapositive, contrapposto, contraption, contrapuntal, contrapuntist

Words related to contraposition

antithesis, contradiction, contradistinction, contrariety, contrariness, contrast, polarity

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