Dictionary

modus tollendo tollens en · NOUN

Etymology

Borrowed from Latin modus tollendō tollēns (roughly, “mode where infirming infirms”).

Meanings

1. (uncountable) A valid form of argument in which the antecedent of a conditional proposition is infirmed, thereby entailing the infirmation of the consequent. Modus tollendo tollens has the form
   • 3. Therefore, non-Q.
   • 1. If non-P, then non-Q.
   • 2. non-P.

Hypernyms

inference rule

Relateds

modus tollendo ponens · modus ponendo ponens · modus ponendo tollens