Dictionary

orthonormal

adjective or·tho·nor·mal \ˌr-thə-ˈnr-məl\

Definition of ORTHONORMAL

1
of real-valued functions :  orthogonal with the integral of the square of each function over a specified interval equal to one
2
:  being or composed of orthogonal elements of unit length <orthonormal basis of a vector space>

First Known Use of ORTHONORMAL

1932

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