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单词 contrapositive
释义

contrapositive

[ kon-truh-poz-i-tiv ]
/ ˌkɒn trəˈpɒz ɪ tɪv /
Logic.
SEE SYNONYMS FOR contrapositive ON THESAURUS.COM

adjective

of or relating to contraposition.

noun

a contrapositive statement of a proposition.

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 UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for contrapositive

  • For a Disjunctive in I., of course, there is no Contrapositive.

    Logic|Carveth Read
  • 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 Minto
  • In the case of the I proposition the contrapositive is impossible, as infringing the main rule of conversion.

    Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3|Various
  • Every 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
  1. a conditional statement derived from another by negating and interchanging antecedent and consequent
  2. 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 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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更新时间:2024/12/23 9:49:13