contrapositive
[ kon-truh-poz-i-tiv ]
/ ˌkɒn trəˈpɒz ɪ tɪv /
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adjective
of or relating to contraposition.
noun
a contrapositive statement of a proposition.
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Origin of contrapositive
First recorded in 1855–60; contraposit(ion) + -ive
Words nearby contrapositive
contraoctave, contraorbital, contraplete, contrapose, contraposition, contrapositive, contrapposto, contraption, contrapuntal, contrapuntist, contrarian
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for contrapositive
There is an apparent exception to this when the real Middle in an argument is a contrapositive term, not-M.
Logic, Inductive and Deductive|William MintoIn the case of the I proposition the contrapositive is impossible, as infringing the main rule of conversion.
For a Disjunctive in I., of course, there is no Contrapositive.
Logic|Carveth ReadEvery positive in thought has a contrapositive, and the positive and contrapositive are of the same kind.
Logic, Inductive and Deductive|William Minto
British Dictionary definitions for contrapositive
contrapositive
/ (ˌkɒntrəˈpɒzɪtɪv) /
adjective
placed opposite or against
noun
logic
- a conditional statement derived from another by negating and interchanging antecedent and consequent
- a categorial proposition obtained from another, esp validly, by any of a number of operations including negation, transferring the terms, changing their quality, and also possibly weakening from universal to particular
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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