non distributio medii

noun

A logical fallacy that is committed when the middle term in a categorical syllogism isn't distributed.

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Meanings

nounnon distributio medii (uncountable)
  1. uncountableA logical fallacy that is committed when the middle term in a categorical syllogism isn't distributed.

    An educated man must be in some sort instructed; but it is a mere non distributio medii to say that an instructed person must be an educated person.

    1932, Albert Jay Nock, The Theory of Education in the United States

Origin

From Latin, literally "undistributed middle".

Full word history & related roots →
Cite this entry
APA

non distributio medii. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/non%20distributio%20medii

MLA

“non distributio medii.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/non%20distributio%20medii. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “non distributio medii,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/non%20distributio%20medii.

Source: non distributio medii on Wiktionary, CC BY-SA 4.0.