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orthonormal

[awr-thuh-nawr-muh l]
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adjective Mathematics.
  1. (of a system of functions) normal; normalized.
  2. (of a set of vectors) having the properties that any two vectors are perpendicular and that each vector has a length of one unit.
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Origin of orthonormal

First recorded in 1930–35; ortho- + normal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018