Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • Descartes, René 1596-1650. French mathematician, philosopher, and scientist who is considered the father of analytic geometry and the founder of modern rationalism. His main works, Meditations on First Philosophy (1641) and Principles of Philosophy (1644), include the famous dictum "I think, therefore I am.”

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • proper n. A French philosopher and mathematician, who lived from 1596 to 1650.

from the GNU version of the Collaborative International Dictionary of English

  • proper n. René Descartes, a French philosopher and mathematician, born 159, died 1650. See biography, below.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. French philosopher and mathematician; developed dualistic theory of mind and matter; introduced the use of coordinates to locate a point in two or three dimensions (1596-1650)

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