orthogonal

形容词 orthogonal:

1. not pertinent to the matter under consideration
   同义词：extraneous, immaterial, impertinent
2. statistically unrelated
3. having a set of mutually perpendicular axes; meeting at right angles
   同义词：rectangular

or.thog.o.nal

adj.Mathematics （形容词）【数学】
Relating to or composed of right angles.
垂直的：与直角有关的或由其组成的

来源：
From Greek orthogônios
源自 希腊语 orthogônios
ortho- [ortho-]
ortho- [直立]
gônia [angle] * see genu-
gônia [角度] *参见 genu-

【引伸】
orthog.onally
adv.（副词）