contrapositive
[ kon-truh-poz-i-tiv ]
/ ˌkɒn trəˈpɒz ɪ tɪv /
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
Example sentences from the Web for contrapositive
For a Disjunctive in I., of course, there is no Contrapositive.
Logic |Carveth ReadThere 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.
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
- 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