orthogonal

(s) 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
extraneous, impertinent, immaterial,
(s) statistically unrelated
(s) 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
rectangular,

extraneous impertinent immaterial rectangular

orthogonality orthogonal opposition