having, or seeming to have, the dimension of depth as well as width and height.
(especially in a literary work) fully developed: The story came alive chiefly because the characters were vividly three-dimensional.
Origin of three-dimensional
First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
three-D or 3-D
of, having, or relating to three dimensionsthree-dimensional space
(of a film, transparency, etc) simulating the effect of depth by presenting slightly different views of a scene to each eye
lifelike or real
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012