D defs.my
Entry 1 sense Webster, 1913

Icositetrahedron

· I·co·si·tet·ra·he·dron · IPA
01 n. A twenty-four-sided solid; a tetragonal trisoctahedron or trapezohedron.
  1. 1.
    A twenty-four-sided solid; a tetragonal trisoctahedron or trapezohedron.(Crystallog.)