Three-dimensional (3D) refers to objects that have depth, width, and height, making them appear more realistic than two-dimensional (2D) images, which only have height and width. In a 3D space, you can visualize how objects occupy volume, allowing for a more immersive experience. This concept is widely used in various fields, including computer graphics, architecture, and virtual reality. 3D technology enables the creation of lifelike representations, such as in 3D modeling and 3D printing. These techniques allow designers and engineers to produce prototypes and products that closely resemble their final forms. Additionally, 3D movies and animations enhance storytelling by providing depth and perspective, engaging viewers more effectively.