See Also: tetrahedral(medicine)
tetrahedral(dictionary)
Tetrahedral - Golf(gambling)

tetrahedral (iou)



tetrahedral adjective. L18.
[from late Greek tetraedros (see TETRAHEDRON) + -AL1. Cf. -HEDRAL.]
Of a prism, pyramid, etc.: having four sides or faces (in addition to the base or ends); bounded by four plane surfaces. L18.
Of, pertaining to, or having the form of a tetrahedron; having axes of symmetry corresponding to the vertices of a tetrahedron; spec. in Crystallography, belonging to a division of the cubic system in which the regular tetrahedron is the characteristic form. E19.
Special collocations: tetrahedral number each of the series of integers 1, 4, 10, 20,..., the nth member of which is the sum of the first n triangular numbers.
tetrahedrally adverb in a tetrahedral manner or form M19.
tetrahedric adjective tetrahedral: only in L19.