contraposition(redirected from Contrapositive (logic))
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An opposite position; antithesis.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. the act of placing opposite or against, esp in contrast or antithesis
2. (Logic) logic the derivation of the contrapositive of a given categorial proposition
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
con•tra•po•si•tion(ˌkɒn trə pəˈzɪʃ ən)
1. placement opposite or against.
2. opposition or antithesis.
3. 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.”
[1545–55; < Late Latin]
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