1
- (of a straight line) joining two opposite corners of a square, rectangle, or other straight-sided shape（正方形、长方形或其他直边形的）对角线的。
1.1
- (of a line) straight and at an angle; slanting:斜线的; 斜的：
a tie with diagonal stripes.
一个有斜纹的领结。
1
- a straight line joining two opposite corners of a square, rectangle, or other straight-sided shape（正方形、长方形或其他直边形的）对角线。
1.1
- Mathematics the set of elements of a matrix that lie on a line joining two opposite corners【数】矩阵对角线元素。
1.2
- a slanting straight line斜线：
the bars of light made diagonals across the entrance
光柱从入口射入形成道道斜线
tiles can be laid on the diagonal
地砖可成斜线铺上.
1.3
- Chess a slanting row of squares whose colour is the same【棋】（棋盘上的）斜线。
派生词
diagonally
adverb词源
mid 16th cent.: from Latin diagonalis, from Greek diagōnios 'from angle to angle'， from dia 'through' + gōnia 'angle'.