Also called entities, primitives are design elements at the lowest stage of complexity, such as lines or arcs, that are joined to make symbols or groups. A fundamental graphic entity. (7/96)
Smallest units in the 3D database. Usually points, lines, and polygons representing basic geometric shapes, such as balls, cubes, cylinders, and donuts. Some 3D hardware and software schemes also employ curves, known as "splines".
Standard geometric 3D objects - sphere, cube, cone, cylinder, square and plane. Generic primitives are often used as building blocks for making more complex models.