quod erat demonstrandum

Latin phrase
quod erat de·​mon·​stran·​dum | \ ˌkwȯd-ˈer-ˌät-ˌde-mən-ˈstran-dəm How to pronounce quod erat demonstrandum (audio) , -ˌdā-ˌmȯn-ˈsträn-ˌdu̇m \

Definition of quod erat demonstrandum

: which (is what) was to be shown (originally) abbreviation QED used at the end of a logical or mathematical proof

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“Quod erat demonstrandum.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/quod%20erat%20demonstrandum. Accessed 16 December 2019.

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