Diagonal - definition, pronunciation, transcription

Amer.  |daɪˈæɡənl|  American pronunciation of the word diagonal
Brit.  |dʌɪˈaɡ(ə)n(ə)l|  British pronunciation of the word diagonal


- (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 (syn: bias)
- 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 (syn: separatrix, slash, solidus, stroke, virgule)


- 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 (syn: aslant, aslope, slanted, slanting, sloped, sloping)


The blanket is covered with diagonal stripes.

...the diagonal design ran up the wall all the way from the lower left to the upper right-hand corner...

...the ramp was set at a low diagonal to make it easier for physically challenged patrons...

the bishop moves on the diagonals

a diagonal line across the page

a number of corresponding diagonal points

Word forms

singular: diagonal
plural: diagonals
See also:  WebsterWiktionaryLongman