Orthogonal

adjective/ɔɹˈθɑ.ɡə.nəl/science

Definition

At right angles; statistically independent or uncorrelated.

Etymology

From Middle French orthogonal, in turn from Medieval Latin orthogōnālis and Latin orthogōnius (“right-angled”), ultimately from Ancient Greek ὀρθογώνιος (orthogṓnios, “rectangular”). By surface analysis, ortho- +‎ -gon +‎ -al.

Synonyms

perpendicular, rectangular

In a sentence

Authentication and authorization are orthogonal concerns.