three-dimensional (3-D) |

least one vertex. (adverb): the qualitative, structural property of simultaneously

facing perpendicular or pointing parallel to three mutually-orthogonal straight lines.

A plane faces and a dimension points. In Physics, the names of the three dimensions

are length, width, and height, with the convention that height is typically aligned

parallel with the direction of gravity of the celestial body used as reference and

width, with the observer's horizon. A dimension has no magnitude associated with it.

2. Three-dimensional (adj.): A word used to qualify an object that contains a vertex or

corner.