three-dimensional

adjective

three-di·​men·​sion·​al ˈthrē-də-ˈmen(t)-sh(ə-)nəl How to pronounce three-dimensional (audio)
 also  -dī-
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 processesL. 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 system, called self-assembling boronate ester release or SABER, acts like a three-dimensional net. Neetika Walter, Interesting Engineering, 10 Sep. 2025 In a study published in Science Advances, LJI researchers revealed the first three-dimensional structure of a protein from one of those ancient human endogenous retroviruses, or HERVs. Ashley MacKin Solomon, San Diego Union-Tribune, 9 Sep. 2025 The space agency provides an interactive three-dimensional diagram tracking both Voyager probes' positions outside the solar system. Eric Lagatta, USA Today, 8 Sep. 2025 And don’t forget to vary standard linen and cotton for three-dimensional fabrics like bouclé and velvet. Ginger Perra, Better Homes & Gardens, 8 Sep. 2025 See All Example Sentences for three-dimensional

Word History

First Known Use

1872, in the meaning defined at sense 1

Time Traveler
The first known use of three-dimensional was in 1872

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Cite this Entry

“Three-dimensional.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/three-dimensional. Accessed 15 Sep. 2025.

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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