Cartesian

Religion is an evil that can be cured by Cartesian knowledge.

In the point (3, 5) on a two-dimensional Cartesian coordinate system, 3 is the abscissa and 5 is the ordinate.

A quadrilateral with all positive abscissas but all negative ordinates would fall into quadrant IV of the Cartesian coordinate plane.

Others within the Cartesian tradition took the idea of a light-bearing medium in quite different directions. For instance, in 1690 Christiaan Huygens considered light to be a sequence of pulses traveling at a finite velocity within the medium.

Following the approach adopted in [2, 3], two orthogonal cartesian reference systems are considered: […].