Synonyms of diagonal

1. diagonal, straight line: usage: (geometry) a straight line connecting any two vertices of a polygon that are not adjacent
2. diagonal, bias, straight line: usage: a line or cut across a fabric that is not at right angles to a side of the fabric
3. diagonal, line, line: usage: an oblique line of squares of the same color on a checkerboard; "the bishop moves on the diagonals"
4. diagonal, set: usage: (mathematics) a set of entries in a square matrix running diagonally either from the upper left to lower right entry or running from the upper right to lower left entry
5. solidus, slash, virgule, diagonal, stroke, separatrix, punctuation, punctuation mark: usage: a punctuation mark (/) used to separate related items of information

1. diagonal, oblique (vs. parallel) (vs. perpendicular): usage: connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face; "a diagonal line across the page"
2. aslant, aslope, diagonal, slanted, slanting, sloped, sloping, inclined (vs. horizontal) (vs. vertical): usage: having an oblique or slanted direction