cartesian

/K AA0 R T IY1 ZH AH0 N/
adjective
  1. 1

    Of, or pertaining to, Descartes, his mathematical methods, or his philosophy, especially with regard to its emphasis on logical analysis and its mechanistic interpretation of physical nature.

  2. 2

    Of, or pertaining to, co-ordinates based on mutually orthogonal axes.

Source: https://en.wiktionary.org/wiki/Cartesian, https://en.wiktionary.org/wiki/cartesian