[con.tra.po.si.tion] n [LL contraposition-, contrapositio, fr. L contraponere to place opposite, fr. contra- + ponere to place--more at position] (1551): 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
CONTRAPOSITION
Meaning of CONTRAPOSITION in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012