Definitions for "frustum"
Keywords:  pyramid, truncated, cone, plane, far
The part of a solid next the base, formed by cutting off the, top; or the part of any solid, as of a cone, pyramid, etc., between two planes, which may be either parallel or inclined to each other.
The part of a solid cone or pyramid next to the base that is formed by cutting off the top by a plane parallel to the base
The visible volume between the near and far clipping planes
Berechnung des Frustum in beliebigen Projektionen
Keywords:  drums, shaft, column, one
One of the drums of the shaft of a column.