adj.
1.at an angle
2.having an oblique or slanted direction diagonal n.
1.(geometry) a straight line connecting any two vertices of a polygon that are not adjacent
2.a line or cut across a fabric that is not at right angles to a side of the fabric
3.an oblique line of squares of the same color on a checkerboard
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
5.a punctuation mark (/) used to separate related items of information
Idiom of the Day
on (someone's) back
making demands or criticizing someone, being an annoyance or bother to someone
My boss has been on my back all week trying to get me to finish my monthly report.