contraposition


con·tra·po·si·tion

noun \-pə-ˈzi-shən\

Definition of CONTRAPOSITION

:  the relationship between two propositions when the subject and predicate of one are respectively the negation of the predicate and the negation of the subject of the other

Origin of CONTRAPOSITION

Late Latin contraposition-, contrapositio, from Latin contraponere to place opposite, from contra- + ponere to place — more at position
First Known Use: 1551

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