three-dimensional

adjective

Synonyms of three-dimensionalnext
1
: of, relating to, or having three dimensions
2
: giving the illusion of depth or varying distances
—used especially of an image or a pictorial representation on a two-dimensional medium when this illusion is enhanced by stereoscopic means
3
: describing or being described in well-rounded completeness
… a three-dimensional analysis of multiple historical processes …—L. L. Snyder
4
: true to life : lifelike

Examples of three-dimensional in a Sentence

an actress who has been acclaimed for her three-dimensional portrayal of the celebrated monarch
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Chair44 can infinitely tile a three-dimensional space by covering it without gaps or overlapping shapes. — Rachel Crowell, Scientific American, 12 Oct. 2026 Around these expanding buffers, SANDO constructs a safety corridor, a chain of connected, obstacle-free regions of three-dimensional space. — New Atlas, 11 Oct. 2026 An algorithm translates those measurements into a three-dimensional representation of the sheet. — Aamir Khollam, Interesting Engineering, 9 Oct. 2026 Building conventional simulations for robot testing can be time-consuming and costly, Taiuti said, requiring developers to create three-dimensional objects and configure scenes. — Wen Shao, Fortune, 6 Oct. 2026 See All Example Sentences for three-dimensional

Word History

First Known Use

1870, in the meaning defined at sense 1

Time Traveler
The first known use of three-dimensional was in 1870

Browse Nearby Words

Cite this Entry

“Three-dimensional.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/three-dimensional. Accessed 14 Oct. 2026.

Kids Definition

three-dimensional

adjective
1
: of, relating to, or having three dimensions (as length, width, and height)
2
: giving the appearance of depth or varying distances
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!