Pronunciation: (tOO'di-men'shu-nl, -dī-), [key]
1. having the dimensions of height and width only: a two-dimensional surface.
2. (of a work of art) having its elements organized in terms of a flat surface, esp. emphasizing the vertical and horizontal character of the picture plane: the two-dimensional structure of a painting.
3. (in a literary work) shallow, unconvincing, or superficial in execution: a novel having two-dimensional characters.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.