adjective /ɔːˈθɒɡənəl/
A chord and the radius that bisects it are orthogonal.
b) Of two functions, linearly independent; having a zero inner product.
The content of the message should be orthogonal to the means of its delivery.
See Also: orthogonalization, orthogonal base, orthogonal matrix, orthogonal transform, orthonormal
Wikipedia foundation.