Definition from Wiktionary, the free dictionary
- Of or pertaining to intension.
2011 July 20, Edwin Mares, “Propositional Function”, in The Stanford Encyclopedia of Philosophy, retrieved 2012-07-15:
- These two treatments of the predicate are typical of the two traditions in traditional logic—the intensional and the extensional traditions. Logicians who can be counted among the intensional logicians are Gottfried Leibniz, Johann Lambert, William Hamilton, Stanley Jevons, and Hugh MacColl. Among the extensional logicians are George Boole, Augustus De Morgan, Charles Peirce, and John Venn.