a. [ L. diagonalis, fr. Gr. &unr_; from to angle;
Diagonal bond (Masonry),
Diagonal built (Shipbuilding),
Diagonal cleavage.
Diagonal molding (Arch.),
Diagonal rib. (Arch.)
Diagonal scale,
Diagonal stratification. (Geol.)
n.
adj. (Math.) able to be diagonalized; -- of a matrix. [ PJC ]
v. t. (Math.) to transform a matrix to a diagonal matrix. [ WordNet 1.5 ]
adv. In a diagonal direction. [ 1913 Webster ]