Relating to three-dimensionality
- Three-dimensional space
- 3D computer graphics, computer graphics that use a three-dimensional representation of geometric data
- 3D film, a motion picture that gives the illusion of three-dimensional perception
- 3D modeling, developing a mathematical representation of any three-dimensional surface or object
- 3D printing, making a three-dimensional solid object of a shape from a digital model
- 3D television, television that conveys depth perception to the viewer
- Stereoscopy, any technique capable of recording three-dimensional visual information or creating the illusion of depth in an image
