Unit vectors which are orthogonal are said to be orthonormal.
Orthonormal Vectors
See also
Orthonormal Basis, Orthonormal Functions, Orthogonal VectorsExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Orthonormal Vectors." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/OrthonormalVectors.html