Intension

Intension is a technical term for meaning, used in opposition to the notion extension. The extension of an expression is the class of objects to which that expression refers, the intension is the abstract concept or property which determines the applicability of the expression and hence the extension. In intensional logic and Montague Grammar the intension of an expression is a function which gives the extension in every possible world.

Link
Utrecht Lexicon of Linguistics

Other languages

 * German Intension (de)