two-dimensional

adjective

two-di·​men·​sion·​al ˈtü-də-ˈmen(t)-sh(ə-)nəl 

 also  -dī-

1

: of, relating to, or having two dimensions

The most symmetric of the two-dimensional objects is the circle, because you can rotate it any amount and reflect it over any axis through its center, and it remains exactly the same …

—Tamara M. Davis

… consider a piece of paper, a two-dimensional object. Crumple the paper up. The more tightly it's compressed, the more chaotic are its folds, and the closer the two-dimensional surface moves to becoming a three-dimensional solid.

—John Briggs and F. David Peat

2

: lacking the illusion of depth : not three-dimensional

His violent, nakedly two-dimensional art can be difficult to capture in photographs, depending as it does in great measure on knotty textures and eccentric color schemes for effect.

—Publishers Weekly

3

: lacking depth of characterization

two-dimensional characters

two-dimensionality

ˈtü-də-ˌmen(t)-shə-ˈna-lə-tē 

 also  -dī-

noun

plural two-dimensionalities

two-dimensionally adverb

This guide … covers thoroughly and in-depth the process of representing the human form two-dimensionally on paper.

—Heather Halliday

Examples of two-dimensional in a Sentence

Recent Examples on the Web

Silicon can be doped simply by mixing other atoms into the channel material—but adding atoms to two-dimensional and one-dimensional materials like CNTs would disrupt their structure. —IEEE Spectrum, 12 Dec. 2024

The two-dimensional characters communicate in bromides; Lena’s fellow privates, who suffer from the laziest defining characteristics (coarse Southern gal, proper preacher’s daughter, New Yorker), are the worst offenders. —Vikram Murthi, IndieWire, 6 Dec. 2024

The post shows a variety of two-dimensional images next to the navigable 3D spaces produced from them, which visitors can tour using their keyboards. World Labs also showed the ability to shift focus and add other effects. —Ina Fried, Axios, 3 Dec. 2024

One of those is a neat feature that will create 3D images from two-dimensional inputs or text. —John Werner, Forbes, 26 Nov. 2024

Word History

First Known Use

1863, in the meaning defined at sense 1

Kids Definition

two-dimensional

adjective

: of, relating to, or having two dimensions (as length and width)