three-dimensional

adjective

three-di·​men·​sion·​al ˈthrē-də-ˈmen(t)-sh(ə-)nəl How to pronounce three-dimensional (audio)
also -dī-
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
three-dimensionality noun

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.
What the best Pixar films prove is that people can relate to anything — from a goldfish to a talking toy — if they’re written as three-dimensional beings. Wilson Chapman, IndieWire, 13 Mar. 2026 Unlike flat or bulky actuators, the new device can be wound into spirals (see video below), knitted into fabrics, or woven into complex three-dimensional structures. Prabhat Ranjan Mishra, Interesting Engineering, 11 Mar. 2026 Can America’s mom also be a three-dimensional person who makes her own mistakes? Whitney Friedlander, Los Angeles Times, 10 Mar. 2026 Photogrammetry uses overlapping photographs to construct three-dimensional digital models, adding spatial context to the flat RTI scans so users can explore the passageway’s surfaces in detail. Ryan Brennan, Kansas City Star, 9 Mar. 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

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Cite this Entry

“Three-dimensional.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/three-dimensional. Accessed 17 Mar. 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

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