modus tollens
noun
modus tol·lens
| \ -ˈtäˌlenz\
plural modi tollentes\ -(ˌ)täˈlen‧ˌtēz \
Definition of modus tollens
: 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)
Keep scrolling for more