Is there a name for a prism where the bases are convex, as in, they curve or jut outward?
Context and application: These shapes can be used to create fair dice of "wacky" sides like a d3 (die with 3 sides), d5, d7, d9, and so on. A d6 is attached below as an example; there is a shape similar to a prism, but the bases have a shape that makes it jut outward, so that it will never land on those bases.
If the pointed ends are achieved by simply adding a single vertex at each pole, these "long" or "barrel" dice are called elongated bipyramids (typically right but with irregular faces). For even-sided dice, there's also the option of gyroelongated bipyramids, in which case the numbered faces are triangles.