Cartesian
Concise Oxford English Dictionary © 2008 Oxford University Press:
Cartesian /kɑːˈtiːzɪən, -ʒ(ə)n/
▶adjective relating to the French philosopher René Descartes (1596–1650) and his ideas. ▶noun a follower of Descartes.
– derivatives
Cartesianism noun.
Cartesianism noun.
– origin C17: from mod. L. Cartesianus, from Cartesius, Latinized form of the name Descartes.
'Cartesian' also found in these Oxford entries:

