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