(geometry) Joining two nonadjacent vertices (of a polygon or polyhedron). / Having slanted or oblique lines or markings. / Having a slanted or oblique direction.

(geometry) A line joining non-adjacent vertices of a polygon. / (geometry) A line or plane at an oblique angle to another. / (fashion) A line or cut across a fabric at an oblique angle to its sides.

In a diagonal manner, not square to any direction.

US spelling of diagonalisation

plural of diagonal

(mathematics, transitive) To convert a square matrix into a diagonal matrix by multiplying it by a second matrix and its inverse.

simple past tense and past participle of diagonalize

(mathematics) Converted into a diagonal matrix

Third-person singular simple present indicative form of diagonalize

present participle of diagonalize