or·thog·o·nal /ɔrˈθɑgənḷ/ 形容詞
Or·thog·o·nal a. Right-angled; rectangular; as, an orthogonal intersection of one curve with another.
Orthogonal projection. See under Orthographic.
adj 1: not pertinent to the matter under consideration; "an issue
extraneous to the debate"; "the price was immaterial";
"mentioned several impertinent facts before finally
coming to the point" [syn: extraneous, immaterial,
2: statistically unrelated
3: having a set of mutually perpendicular axes; meeting at
right angles; "wind and sea may displace the ship's center
of gravity along three orthogonal axes"; "a rectangular
Cartesian coordinate system" [syn: rectangular]