Main entry: orthogonal, rectangular
Definition: having a set of mutually perpendicular axes; meeting at right angles
Usage: wind and sea may displace the ship's center of gravity along three orthogonal axes; a rectangular Cartesian coordinate system
Main entry: orthogonal
Definition: statistically unrelated
Main entry: orthogonal, extraneous, immaterial, impertinent
Definition: not pertinent to the matter under consideration
Usage: an issue extraneous to the debate; the price was immaterial; mentioned several impertinent facts before finally coming to the point