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The form of reasoning characteristic of logic and mathematics in which a conclusion is inferred from a set of premises that logically imply it. The term also denotes a conclusion drawn by this process. See also deductive reasoning, inference, logic. Compare induction (1, 2). deduce vb. deductive adj. [From Latin deducere to lead away or deduce, from de- from + ducere to lead + -ion indicating an action, process, or state]

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