Cartesian means of or relating to the French philosopher and mathematician René Descartes—from his name—Rene Des-Cartes. It may refer to:Cartesian anxietyCartesian circleCartesian dualismCartesian Meditations, a work by Edmund HusserlCartesian linguistics, a work by Noam ChomskyCartesian theaterCartesian diver, a science experimentCartesian physics In mathematics:Cartesian closed category, a closed category in category theoryCartesian coordinate system, modern rectangular coordi… (More on Cartesian)