Liberal Dictionary English Dictionary
quod erat demonstrandum [kwawd e-raht dey-mawn-strahn-doo m; English kwod er-uh t dem-uh n-stran-duh m] Latin.
- which was to be shown or demonstrated.
British Dictionary definitions for quod erat demonstrandum quod erat demonstrandum
- (at the conclusion of a proof, esp of a theorem in Euclidean geometry) which was to be provedAbbreviation: QED
quod erat demonstrandum in Culture 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.”