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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Merriam-Webster unabridged
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Time Traveler for three-dimensional
The first known use of three-dimensional was in 1872
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