Definition, Meaning & Synonyms

contraposition

noun
/ˌkɒntrəpəˈzɪʃən/
Definition
The action of placing two opposite things in relation to each other.
Examples
  • If A implies B, then the contraposition would state that if not B, then not A.
  • She used contraposition to prove her argument in the debate.
  • The teacher explained that understanding contraposition is crucial for logical reasoning.
Meaning
In logic, it refers specifically to a method of logical reasoning involving the inversion and negation of a statement.
Synonyms
  • Inversion
  • Negation
  • Reverse implication