3D

WordReference Random House Learner's Dictionary of American English © 2025

three-di•men•sion•al /ˈθridɪˈmɛnʃənəl/   adj. 

1. having, or seeming to have, the dimension of depth as well as width and height.
2. (esp. of a piece of writing, etc.) lifelike:
   The author makes all his characters three-dimensional.

WordReference Random House Unabridged Dictionary of American English © 2025

three-di•men•sion•al  (thrē′di men′shə nl, -dī-), adj. 

1. having, or seeming to have, the dimension of depth as well as width and height.
2. (esp. in a literary work) fully developed:
   The story came alive chiefly because the characters were vividly three-dimensional.

• 1890–95

three′di•men′sion•al′i•ty, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

three-dimensional, three-D, 3-D adjective

1. of, having, or relating to three dimensions
2. (of a film, transparency, etc) simulating the effect of depth by presenting slightly different views of a scene to each eye
3. having volume
4. lifelike or real