quod erat demonstrandum

[kwawd e-raht dey-mawn-strahn-doo m; English kwod er-uh t dem-uh n-stran-duh m]
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Latin.

which was to be shown or demonstrated.

Nearby words

  1. quo jure?,
  2. quo vadis,
  3. quo warranto,
  4. quoad hoc,
  5. quod,
  6. quod erat faciendum,
  7. quod vide,
  8. quodlibet,
  9. quoin,
  10. quoin post

quod erat faciendum

[kwawd e-raht fah-kee-en-doo m; English kwod er-uh t fey-shee-en-duh m]

Latin.

which was to be done.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for erat


British Dictionary definitions for erat

quod erat demonstrandum

(at the conclusion of a proof, esp of a theorem in Euclidean geometry) which was to be provedAbbreviation: QED
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Culture definitions for erat

quod erat demonstrandum

[(kwawd er-aht dem-uhn-stran-duhm)]

A phrase used to signal that a proof has just been completed. From Latin, meaning “that which was to be demonstrated.”

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.