Adjective : a two-dimensional surface. ,the two-dimensional structure of a painting. ,a novel having two-dimensional characters.    From Dictionary.com. 

And layered ages, the two-dimensionality of human influence.    From Wordnik.com.  [One More] Reference

As for everyone's comments on two-dimensionality, I totally agree.    From Wordnik.com.  [Tube Bits For 08/15/07] Reference

The fact that his characters rise to two-dimensionality is a huge improvement over Ouroboros.    From Wordnik.com.  [Stuff that Makes Tolkien Look Like a Radical Progressive] Reference

Around 1900, there came a crisis of quality, with fears of trivialization and two-dimensionality.    From Wordnik.com.  [Nathan Gardels: Axel Springer's D��pfner on Davos MSM vs. New Media Debate] Reference

Against all mat darkness, in the low-level lighting, without gravity, those lines take on a flat two-dimensionality, so all of them seem equally near or far away.    From Wordnik.com.  [Passage at Arms]

And while you could definitely point out a little two-dimensionality here and there, the people are never so shallow as to strike the reader as utterly unbelievable.    From Wordnik.com.  [Archive 2006-07-01] Reference

Take, for example, Michael Crichton novels -- his plots are gruel-thin, his characters aspire to two-dimensionality, and the dialogue is an insult to boilerplates everywhere.    From Wordnik.com.  [Putting up with Potter] Reference

The window pictures are most effective and the most like Eastman's previous work in that they manage to convey depth and weight despite the given two-dimensionality of windows.    From Wordnik.com.  [ArtScene: This Week's Top Exhibitions in the Western U.S. (August 17-21, 2010)] Reference

She's as remorselessly bright and chilly as a fine January morning, with a perky and slightly patronising two-dimensionality of character that I find totally and utterly alienating.    From Wordnik.com.  [The Apprentice : This Time It's Kate and Yasmina] Reference

When Stauffenberg as played with admirable two-dimensionality by Tom Cruise presents the revised Walküre plan to Hitler at the Berghof on the Obersalzburg, Hitler asks whether Stauffenberg knows his Wagner.    From Wordnik.com.  [Archive 2009-01-01] Reference

She's pretty two-dimensional, but she doesn't care 'cause its never held her back before, and if two-dimensionality produces sparkly memories, glamorous futures and aesthetically pleasing photos then what's that third dimension even worth?.    From Wordnik.com.  [Archive 2007-03-01] Reference

(For example, one cannot give an adequate account of a single Synthetic Cubist canvas by, say, Juan Gris, without at least taking into account the increasing, and increasingly self-aware, assertion of the two-dimensionality of the picture-surface which one finds in collages and paintings by both Braque and Picasso from 1912 on.).    From Wordnik.com.  [Bad Form] Reference

Not to complain about a free comic or anything, but judging from this sample, what we've got here is an awfully rote, boilerplate post-apocalyptic yarn with a schlubbier than usual hero who doesn't even--ah, but I don't want to "spoil" anything, and a sinister Men-in-Black-type bad guy who only achieves two-dimensionality as a character by being "British.".    From Wordnik.com.  [Archive 2009-04-26] Reference

Scarry asserts in Dreaming by the Book, — its faintness, two-dimensionality, fleetingness, and dependence on volitional labor — with the vivacity, solidity, persistence, and givenness of the perceptible world .... this comes about because we are given procedures for reproducing the deep structure of perception, and because the procedures themselves have an instructional character that duplicates the.    From Wordnik.com.  [Seeing Is Reading] Reference

This speaks to the whole two-dimensionality of the internet experience.    From Wordnik.com.  [MetaTalk] Reference

The best cure for the mediocrity and two-dimensionality of the present, is to grapple with Schiller's ideas.    From Wordnik.com.  [LaRouche's Latest] Reference

But in a sweeping tale set two millennia ago, we can forgive the two-dimensionality of many of the characters.    From Wordnik.com.  [Independent Weekly: All Recent Stories] Reference

He played with representation and abstraction, naturalism and symbolism, three-dimensionality and two-dimensionality, external-reference and self-expression.    From Wordnik.com.  [The Seattle Times] Reference

All of them (even Burns in an odd sort of way) have explored the two-dimensionality of comics images, and designed panels and pages with an eye for decorative effect.    From Wordnik.com.  [Comics Comics] Reference

Once, at a Milford Conference several decades ago, I got in a long and heated argument with two New Wave writers who put forward the proposition that since fiction is not real, it should not pretend to be real, that good fiction is all about the words, that stories should celebrate their "paperiness" the same way abstract art celebrates its two-dimensionality, as opposed to earlier styles of painting that tried to create the illusion of three dimensions.    From Wordnik.com.  [A Few Last Words] Reference

A fun story, even if flawed by both Selene’s two-dimensionality and her impulsive discarding of her amulet.    From Wordnik.com.  [EP093: {Now + n, Now – n}] Reference

And don't be vastly flatter and less human than the seven-page comic insert you're indicting for its alleged two-dimensionality.    From Wordnik.com.  [princeofcairo: This Is Not A Funny Story!] Reference

(Once, at a Milford Conference several decades ago, I got in a long and heated argument with two New Wave writers who put forward the proposition that since fiction is not real, it should not pretend to be real, that good fiction is all about the words, that stories should celebrate their "paperiness" the same way abstract art celebrates its two-dimensionality, as opposed to earlier styles of painting that tried to create the illusion of three dimensions.    From Wordnik.com.  [A Few More Last Words] Reference