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. The middle term (in bold below) must be distributed in at least one premise but not in the conclusion. The major term and the minor terms, also called the end terms, do appear in the conclusion.
Example:
- Major premise: All men are mortal.
- Minor premise: Socrates is a man.
- Conclusion: Socrates is mortal.
The middle term is bolded above.
Famous quotes containing the words middle and/or term:
“Few women, I fear, have had such reason as I have to think the long sad years of youth were worth living for the sake of middle age.”
—George Eliot [Mary Ann (or Marian)
“Mr. Roosevelt, this is my principal request—it is almost the last request I shall ever make of anybody. Before you leave the presidential chair, recommend Congress to submit to the Legislatures a Constitutional Amendment which will enfranchise women, and thus take your place in history with Lincoln, the great emancipator. I beg of you not to close your term of office without doing this.”
—Susan B. Anthony (1820–1906)