diagonal - noun

(geometry) a straight line connecting any two vertices of a polygon that are not adjacent

a line or cut across a fabric that is not at right angles to a side of the fabric

an oblique line of squares of the same color on a checkerboard

(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

a punctuation mark (/) used to separate related items of information

diagonal - adjective

• connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face
• having an oblique or slanted direction

diagonal - thesaurus

aslant   aslope   bias   separatrix   slanted   slanting   slash   sloped   sloping   solidus   stroke   virgule