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2D

American  
[too-dee] / ˈtuˈdi /
Or 2-D

adjective

  1. of, relating to, or representing something in two dimensions; two-dimensional.

    2D computer graphics.

noun

  1. a two-dimensional form or appearance.

    The theater is showing that film in 2D and in 3D.

Etymology

Origin of 2D

First recorded in 1960–65

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"By converting 2D nanosheets into 1D scrolls, we prevent this nano-confinement effect. The open, tubular geometry effectively creates 'highways' for rapid transport, allowing ions to move freely."

From Science Daily • Mar. 31, 2026

Phosphorus is also capable of forming stable 2D structures.

From Science Daily • Feb. 16, 2026

While giving no release date for the remakes, it unexpectedly announced a side-scrolling 2D prequel game Sons of Sparta with immediate release.

From BBC • Feb. 13, 2026

In hardware tests and simulations, the 3D chip beats 2D chips by roughly an order of magnitude.

From Science Daily • Dec. 24, 2025

I looked, but all I saw was three people moving through the dark, carrying stuff from a pickup truck to unit 2D.

From "The Book of Unknown Americans" by Cristina Henríquez

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.