Definition of: reasoning

(rē′zən·ing) noun
The act or process of the mind by which from propositions known or assumed new propositions are reached; argumentation; also, the reasons, proofs, or arguments employed in such process. Synonyms: argument, argumentation, debate, ratiocination. Argumentation and debate always suppose two parties alleging reasons for and against a proposition. Reasoning may be the act of one alone, as it is simply the orderly setting forth of reasons, whether for the instruction of inquirers, the confuting of opponents, or the clear establishment of truth for oneself. Reasoning may be either deductive or inductive. Argument or argumentation was formerly used of deductive reasoning only. With the rise of the inductive philosophy these words have come to be applied to inductive processes also; but while reasoning may be informal or even unconscious, argument and argumentation strictly imply logical form. Compare INTELLECT, REASON.