- connecting two nonadjacent angles or vertices of a polygon or polyhedron, as a straight line.
- extending from one edge of a solid figure to an opposite edge, as a plane.
Origin of diagonal
Related Words for diagonallycrosswise, askew, obliquely, aslant, catty-corner, cornerwise, kitty-corner, slantways, slantwise
Examples from the Web for diagonally
Historical Examples of diagonally
The thong was cut across, diagonally, almost as clean as though done by a knife.White Fang
But he hurried on, diagonally, across the big cavern-like hall.Nostromo: A Tale of the Seaboard
She swung us diagonally away from both the camp and the brigand ship.
We caught the fellow as he was diagonally crossing the street.The White Invaders
Raymond King Cummings
These branched off diagonally or at right angles, and were more or less deep and steep.The War Trail