1. [Noun]: a punctuation mark (/) used to separate related items of information

2. [Noun]: an oblique line of squares of the same color on a checkerboard; "the bishop moves on the diagonals"

3. [Noun]: (geometry) a straight line connecting any two vertices of a polygon that are not adjacent

4. [Noun]: (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. [Noun]: a line or cut across a fabric that is not at right angles to a side of the fabric

6. at an angle; especially 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"

7. having an oblique or slanted direction

Similar words to 'diagonal'

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