orthogonal
adj//oːˈθɒɡ.ə.nəl//ortogonal, rätvinklig, vinkelrät
(geometry) Of two objects, at right angles; perpendicular to each other.
Of a pair of elements in an ortholattice: each less than or equal to the orthocomplement of the other.
(mathematics)
(statistics) Statistically independent, with reference to variates.