A three-dimensional figure is a shape or object that has three dimensions: length, width, and height. Synonyms for this term include solid, 3D shape, cuboid, and prism. A solid is a physical object that occupies space and has a definite shape and size, while a 3D shape refers to any object with three dimensions. A cuboid is a rectangular solid or box-shaped figure with six faces, while a prism is a three-dimensional figure with rectangular or polygonal faces that are parallel and congruent. Whether it's for math or art, there are plenty of synonyms to describe a three-dimensional figure.