In philosophical semantics or the philosophy of language, the 'extension' of a concept or expression is the set of things it extends to, or applies to, if it is the sort of concept or expression that a single object by itself can satisfy. Concepts and expressions of this sort are monadic or "one-place" concepts and expressions.
In philosophical semantics or the philosophy of language, the 'extension' of a concept or expression is the set of things it e:xtends to, or applies to, if it is the sort of concept or expression: that a single object by itself can satisfy. Concepts and expressions of this! sort are monadic or "one-place". concepts and expressions.