A diagram, or graphical representation, of certain relations of a system of things, without any pretense to the correct representation of them in other respects; in the Kantian philosophy, a product of the imagination intermediate between an image and a concept. being intuitive, and so capable of being observed, like the former, and general or quasi-general, like the latter, An outline or image universally applicable to a general conception, under which it is likely to be presented to the mind, a schematic or preliminary plan