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en.wikipedia.org/wiki/Orthogonality

In mathematics, orthogonality is the generalization of the notion of perpendicularity to the linear algebra of bilinear forms. Two elements u and v of a vector space with bilinear form B are orthogonal ... In certain cases, the word normal is used to mean orthogonal, particularly in the geometric sense as in the normal to a surface ...

mathworld.wolfram.com/OrthogonalVectors.html

(i.e., the vectors are perpendicular) are said to be orthogonal. ... From MathWorld --A Wolfram Web Resource. http://mathworld.wolfram.com/OrthogonalVectors.

www.merriam-webster.com/dictionary/orthogonal

Define orthogonal: intersecting or lying at right angles — orthogonal in a ... in the examples do not represent the opinion of Merriam-Webster or its editors.

www.vocabulary.com/dictionary/orthogonal

Two lines that are orthogonal are perpendicular or intersecting at a right angle, ... it also describes events that are statistically independent, or do not affect one ...

english.stackexchange.com/questions/12219/usage-of-the-word-orthogonal-outside-of-mathematics

Feb 11, 2011 ... In statistics, the meaning of orthogonal as unrelated (or more precisely ... Update: I did not want to implicate but without it my answer is not ...

stats.stackexchange.com/questions/12128/what-does-orthogonal-mean-in-the-context-of-statistics

It means they [the random variables X,Y] are 'independent' to each other. Independent random variables are often considered to be at 'right angles' to each  ...

www.dictionary.com/browse/orthogonal

Orthogonal definition, Also, orthographic. pertaining to or involving right angles or perpendiculars: an orthogonal projection. See more.

www.quora.com/What-does-orthogonal-mean-in-basic-terms

I hope you know a bit about vectors. In the language of Physics, a vector is a quantity which has both a direction and a magnitude. For eg. displacement, velocity ...