| Noun | 1. | logical fallacy - a fallacy in logical argumentation fallacy, false belief - a misconception resulting from incorrect reasoning hysteron proteron - the logical fallacy of using as a true premise a proposition that is yet to be proved ignoratio elenchi - the logical fallacy of supposing that an argument proving an irrelevant point has proved the point at issue petitio, petitio principii - the logical fallacy of assuming the conclusion in the premises; begging the question post hoc, post hoc ergo propter hoc - the logical fallacy of believing that temporal succession implies a causal relation |