from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. : The set of all points in a planar coordinate system.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a plane in which all points can be described in Cartesian coordinates
From the name of the French mathematician and philosopher René Descartes who is credited with developing the mathematics. (Wiktionary)