Middle term

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In logic, a middle term is a term that appears (as a subject or predicate of a categorical proposition in both premises but not in the conclusion of a categorical syllogism.[1] Example:

Major premise: All men are mortal.
Minor premise: Socrates is a man.
Conclusion: Socrates is mortal.

The middle term is bolded above.


This article is based on material taken from the Free On-line Dictionary of Computing prior to 1 November 2008 and incorporated under the "relicensing" terms of the GFDL, version 1.3 or later.