Dictionary

modus tollens en · NOUN

Etymology

From Latin modus tollendō tollēns (“the mode where the denying denies”), from modus (“mode”) and forms of tollō (“to take away”).

Meanings

1. (uncountable) A valid form of argument in which the consequent of a conditional proposition is denied, thus implying the denial of the antecedent. Modus tollens has this form
   • 3. Therefore, not P.
   • 1. If P, then Q.
   • 2. Not Q.

Forms

Hypernyms

inference rule

Relateds

modus ponens

Translations (4)

de Modus tollens (a valid form of argument in which the consequent of a condition proposition is denied) · pl modus tollens (a valid form of argument in which the consequent of a condition proposition is denied) · is neitunarháttur (a valid form of argument in which the consequent of a condition proposition is denied) · fa نفی تالی (a valid form of argument in which the consequent of a condition proposition is denied)