 Metabidiminished icosahedron

The term "metabidiminished icosahedron" appears to refer to a geometric shape derived from the icosahedron, one of the five Platonic solids. The icosahedron is a three-dimensional shape with 20 triangular faces, 12 vertices, and 30 edges. The prefix "meta-" and the term "diminished" often indicate some transformation of the original shape.