three-di·​men·​sion·​al | \ ˈthrē-də-ˈmench-nəl How to pronounce three-dimensional (audio) , -ˈmen(t)-shə-nᵊl also -dī- \

Definition of three-dimensional

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

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Other Words from three-dimensional

three-dimensionality \ ˈthrē-​də-​ˌmen(t)-​shə-​ˈna-​lə-​tē How to pronounce three-dimensionality (audio) \ noun

First Known Use of three-dimensional

1872, in the meaning defined at sense 1

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Time Traveler for three-dimensional

Time Traveler

The first known use of three-dimensional was in 1872

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Cite this Entry

“Three-dimensional.” Dictionary, Merriam-Webster, Accessed 19 Sep. 2020.

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More Definitions for three-dimensional


How to pronounce three-dimensional (audio)

English Language Learners Definition of three-dimensional

: having or seeming to have length, width, and depth
: having different qualities that are like the qualities of a real person



Kids Definition of three-dimensional

1 : relating to or having the three dimensions of length, width, and height A cube is three-dimensional.
2 : giving the appearance of depth or varying distances a three-dimensional movie

More from Merriam-Webster on three-dimensional

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Nglish: Translation of three-dimensional for Spanish Speakers

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