1.n. A twenty-four-sided solid; a tetragonal trisoctahedron or trapezohedron.
Medical Definition of Icositetrahedron
1. A twenty-four-sided solid; a tetragonal trisoctahedron or trapezohedron.
Origin: Gr. Twenty +, combining form of four + seat, base.
Source: Websters Dictionary
(01 Mar 1998)