1. (geometry) a straight line connecting any two vertices of a polygon that are not adjacent Noun
2. A line or cut across a fabric that is not at right angles to a side of the fabric Noun
3. An oblique line of squares of the same color on a checkerboard Noun
4. (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 Noun
5. A punctuation mark (/) used to separate related items of information Noun
6. Connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face Adjective Satellite
7. Having an oblique or slanted direction Adjective Satellite