Definition of contrapositions Contrapositions
We found 2 definitions of contrapositions from 1 different sources.
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What does contrapositions mean?
Wiktionary 
- contrapositions (Noun)
Plural of contraposition.
Wiktionary
- contraposition (Noun)
The statement of the form "if not Q then not P", given the statement "if P then Q".
Webster DictionaryWebster's Unabridged Dictionary 📘
- contraposition (n.)
A placing over against; opposite position. - contraposition (n.)
A so-called immediate inference which consists in denying the original subject of the contradictory predicate; e.g.: Every S is P; therefore, no Not-P is S.
Chambers DictionaryChamber's 20th Century Dictionary 📕
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contraposition
kon′tra-po-zish′un, n. opposition, contrast: (logic) an immediate inference, which consists in denying the original subject of the contradictory of the original predicate.—adj. Con′tra-pos′itive
