A Definition of two-dimensional design for visual artists and image-makers:

Take it from me, as I’m a digital artist. I hope this helps, and If it’s too long, you can always copy and paste to a length of your choosing.

Definition: When a work of art is classified as being 2-dimensional, it means that the composition possesses the dimensions of length and width but does not possess depth. All 2-dimensional pieces of art, such as drawings, paintings, and prints, are made up of shapes.

true

that is the way that they talked back then

=)