Tri'do-dēe'a hē'dral, a.
a. [From tri, for tris, and dodecahedral; Fr. tridodécaèdre.] (Crystallog.) Presenting three ranges of faces, one above another, each containing twelve faces.
a. [From tri, for tris, and dodecahedral; Fr. tridodécaèdre.] (Crystallog.) Presenting three ranges of faces, one above another, each containing twelve faces.