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)

History and Etymology for modus tollens

New Latin, removing mode

Keep scrolling for more