1.
A three-dimensional object is solid rather than flat, because it can be measured in three different directions, usually the height, length, and width. The abbreviation 3-D can also be used.
...a three-dimensional model.
ADJ
2.
A three-dimensional picture, image, or film looks as though it is deep or solid rather than flat. The abbreviation 3-D can also be used.
...new software, which generates both two-dimensional drawings and three-dimensional images.
ADJ
3.
If you describe fictional characters as three-dimensional you mean that they seem real and natural.
She emerges as a full, three-dimensional character in a way that few horror genre heroines ever do.
ADJ [ approval ]
4.
Three-dimensional art or design is produced by carving or shaping stone, wood, clay, or other materials. The abbreviation 3-D can also be used.
...a degree in three-dimensional art.
ADJ : ADJ n