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1. Oxford Dictionary

   modus tollens

   • IPA[ˌməʊdəs ˈtɒlɛnz]

   英式

   • n.
     the rule of logic which states that if a conditional statement (‘if p then q’) is accepted, and the consequent does not hold (not-q) then the negation of the antecedent (not-p) can be inferred.；an argument using the rule of modus tollens.

   • noun: modus tollens

2. • 更多解釋

   modus tollens

   • IPA[ˈmōdəs ˈtälenz]

   美式

   • n.
     the rule of logic stating that if a conditional statement (“if p then q”) is accepted, and the ...

   Oxford American Dictionary