In the Philosophy Of Mind , Intentionality is the property of being "about" something else, or to have some subject matter, in a certain way. Many states of mind, such as ''thinking about the Pyramid s'', are characteristically ''about'' things (in this case the pyramids). Other things, such as words and paintings, can also have kinds of intentionality. Rocks and tables, in general, do not have intentional states.
An '' Intension '' (with an ''s'', but easily mistaken for ''intention'' with a ''t'') is an aspect of the meaning of an expression. It is meant to contrast with ''extension''.
