modus tollens
/ Latin (ˈməʊdəs ˈtɒlˌɛnz) /
noun
logic
the principle that whenever a conditional statement and the negation of its consequent are given to be true, the negation of its antecedent may be validly inferred, as in if it's Tuesday this must be Belgium and this isn't Belgium so it's not Tuesday
Word Origin for modus tollens
literally: mood that denies
Words nearby modus tollens
modulus,
modulus of elasticity,
modulus of rigidity,
modus operandi,
modus ponens,
modus tollens,
modus vivendi,
moe,
moebius,
moer,
moerae