Brach`y*di*ag"o*nal (?), a. [Gr. short + E. diagonal.]
Pertaining to the shorter diagonal, as of a rhombic prism.
Brachydiagonal axis, the shorter lateral axis of an orthorhombic crystal.
© Webster 1913.
Brach`y*di*ag"o*nal, n.
The shorter of the diagonals in a rhombic prism.
© Webster 1913.