Pronunciation: /kyu i di/ ?

Q.E.D. is an abbreviation placed at the end of a proof. It comes from the Latin phrase quod erat démonstrandum which means 'That which was to be proved'.


  1. qed. http://wordnet.princeton.edu/. WordNet. Princeton University. (Accessed: 2011-01-08). http://wordnetweb.princeton.edu/perl/webwn?s=qed&sub=Search+WordNet&o2=&o0=1&o7=&o5=&o1=1&o6=&o4=&o3=&h=.

Cite this article as:

QED. 2007-09-04. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/q/qed.html.


Image Credits

Revision History

2007-09-04: Added 'More Information' (McAdams, David.)
2007-07-12: Initial version (McAdams, David.)

All Math Words Encyclopedia is a service of Life is a Story Problem LLC.
Copyright © 2005-2011 Life is a Story Problem LLC. All rights reserved.
Creative Commons License This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License