[N.B.: The archeologically recovered objects, such as those described in this post, are still referred to as "Roman dodecahedron", but that is partly to distinguish them from the scientific study of such figures in chemistry, crystallography, geometry, mathematics, and so forth. Considering the most recent archeological discoveries and studies, we will have to stop calling them "Roman dodecahedron" and may well have to begin styling them "Gallo dodecahedron" or at least "Gallo-Roman dodecahedron" (see below for the reasoning). In geometry, a dodecahedron or duodecahedron is **any polyhedron with twelve flat faces**. The most familiar dodecahedron is the regular dodecahedron with regular pentagons as faces, which is a **Platonic** solid. As if we hadn't spoken enough about dodecahedrons in the last few years! Problem is, most of what we said was speculation, albeit interesting and ingenious, based on little other than the objects themselves — their odd shape, the locations where they were found, etc.…