ORTHOGONAL

• (adj.) 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"

  synonyms : rectangular

• (adj.) statistically unrelated

• (adj.) 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"

  synonyms : extraneous , immaterial , impertinent

WordNet® 3.0, © 2006 by Princeton University.

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