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Definition of: fallacy
(fal′ə·sē) noun plural ·cies
1. Anything that deceives the mind or eye; deception.
2. A flaw in reasoning; fallaciousness.
3. Logic. Any reasoning, exposition, argument, etc., contravening the canons of logic. See synonyms under DELUSION, ERROR. [<L fallacia <fallax, fallacis deceptive <fallere deceive]
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