orthogonal

Two lines that are orthogonal are perpendicular or intersecting at a right angle, like a t-square used by draftsmen.

The word orthogonal comes from the Greek orthog┼Źnios meaning "right-angled." While this word is used to describe lines that meet at a right angle, it also describes events that are statistically independent, or do not affect one another in terms of outcome.

Primary Meanings of orthogonal

1.
adj
having a set of mutually perpendicular axes; meeting at right angles
2.
adj
not pertinent to the matter under consideration
Full Definitions of orthogonal
1

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”
Synonyms:
rectangular
perpendicular
intersecting at or forming right angles
2

adj not pertinent to the matter under consideration

Synonyms:
extraneous, immaterial, impertinent
irrelevant
having no bearing on or connection with the subject at issue

adj statistically unrelated

Synonyms:
unrelated
lacking a logical or causal relation

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