0 flat, having width and length but not depth
1 A person or story that is two-dimensional is too simple, showing little deep, serious thought, or understanding:
I didn't believe in any of the characters in the book - they were somehow two-dimensional.
2 flat, having width and length but not depth:
Painting is a two-dimensional art that tries to give the illusion of three dimensions.
3 → 2-D
