ORTHOGONAL
orthogonal
Adjective
- Of two objects, at right angles; perpendicular to each other.
- A chord and the radius that bisects it are orthogonal.
 
 
- Of two functions, linearly independent; having a zero inner product.
- The normal vector and tangent vector at a given point are orthogonal.
 
 - Of a square matrix, such that its transpose is equal to its inverse.
 - Of a linear transformation, preserving its angles.
 
- Statistically independent, with reference to variates.
 - Of two or more aspects of a problem, able to be treated separately.
- The content of the message should be orthogonal to the means of its delivery.
 
 - Of two or more problems or subjects, independent of or irrelevant to each other.
 
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