(|)tris, trəs+ noun
Etymology: tris- + tetrahedron
: a solid (as a crystal) of the tetrahedral class of the isometric system having 12 triangular faces and related to the trapezohedron of the holohedral class — compare deltohedron
(|)tris, trəs+ noun
Etymology: tris- + tetrahedron
: a solid (as a crystal) of the tetrahedral class of the isometric system having 12 triangular faces and related to the trapezohedron of the holohedral class — compare deltohedron
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012