(chiefly formal, in law, logic, etc.) Used in numerous Latin phrases (and occasionally alone) in the sense of “appeal” or “argument”.

The use of physical force to win an argument.

(informal, rare) plural of argumentum ad hominem

(logic) A type of fallacious argument in which the attempt is made to refute a theory or belief by discrediting the person(s) who advocate that theory or belief; an ad hominem argument.

(rhetoric) The false proof of a statement by (prolonged) repetition, possibly by different people.

(rhetoric) argumentum ad populum.

(rhetoric) A fallacious argument that concludes a proposition to be true because many or all people believe it; it alleges that “if many believe so, it is so”.

(rhetoric) An argument from authority, or an appeal to authority.

(rhetoric, rare) An appeal to poverty; the logical fallacy of thinking a conclusion is correct because the speaker is poor.

(rhetoric) A fallacious argument that asserts the truth of a proposition by an appeal to pious testimony or religious revelation.