3D

American

[three-dee] / ˈθriˈdi /

Or 3-D

adjective

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

3D movies.

noun

a three-dimensional form or appearance.

My dreams are always in 3D.

Etymology

Origin of 3D

An Americanism dating back to 1950–55

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 using real 3D data to build simulators, embodied AI systems can reduce the sim-to-real gap, improving training efficiency and lowering deployment costs, Daiwa says.

From The Wall Street Journal • Apr. 21, 2026

Creating their own game had been "this dream that we talked about all the time" as they learned skills such as programming and 3D modelling.

From Barron's • Apr. 12, 2026

Disney began selling simple souvenir popcorn pails in the 1990s and in 2010 introduced a 3D container modeled after Micky Mouse.

From Los Angeles Times • Apr. 6, 2026

Key contributions came from collaborators at Janelia Research Campus in Virginia, including specialists in fluorescence correlation spectroscopy and 3D super-resolution imaging.

From Science Daily • Apr. 1, 2026

The 3D hologram spins like a massive blue-and-green marble.

From "The Last Cuentista" by Donna Barba Higuera

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