Duoprism

A duoprism is a Cartesian product of two polytopes. If one factor is a point, then the resulting polytope is identical to the other factor. If one factor is a line segment, then the resulting polytope is a prism. Neither of these cases are usually considered duoprisms, so the first actual duoprisms are four-dimensional. Analogs with more factors exist, and are called trioprisms, tetraprisms, etc.