modus tollens
noun
modus tol·lens
\-ˈtäˌlenz\
Definition of modus tollens
modi tollentes
\-(ˌ)täˈlen‧ˌtēz\: a mode of reasoning from a hypothetical proposition according to which if the consequent be denied the antecedent is denied (as, if A is true, B is true; but B is false; therefore A is false)
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Origin and Etymology of modus tollens
New Latin, removing mode
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