In argumentation theory, a term (or notion) is that part of a statement in an argument which refers to a specific thing. A term is usually, but not always expressed as a noun. According to Essentials of Logic, the word is derived from the Latin "terminus."[1]
One of the requirements to informally prove a conclusion with a deductive argument is for all its terms to be used unambiguously. The ambiguous use of a term in a deductive argument may be an instance of the fallacy of four terms.
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