orthogonal Meaning, Definition & Usage

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

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