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.
The study authors then fed this information into a detailed three-dimensional computer model designed to simulate the sun’s internal magnetic machinery. Rupendra Brahambhatt, Interesting Engineering, 1 Feb. 2026 If Saunders and Shapiro both come short of creating a three-dimensional person, this reminds us that in the best works, the subtle alchemy of summoning succeeds. Emma Sarappo, The Atlantic, 30 Jan. 2026 The breezy textile, frequently used for T-shirts, was draped into an elegant dress, which also featured a three-dimensional bodice and a thigh-high slit. Hannah Malach, InStyle, 30 Jan. 2026 In a later study published in Nature Ecology & Evolution in 2024, the researchers deepened their insight by using three-dimensional tracking to quantify the dynamics of octopus–fish hunting groups. Scott Travers, Forbes.com, 29 Jan. 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 2 Feb. 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

More from Merriam-Webster on three-dimensional

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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