quod erat demonstrandum
Latin phrase
quod erat de·mon·stran·dum
ˌkwȯd-ˈer-ˌät-ˌde-mən-ˈstran-dəm 
-ˌdā-ˌmȯn-ˈsträn-ˌdu̇m
: which (is what) was to be shown (originally)
—abbreviation QED
—used at the end of a logical or mathematical proof
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Cite this Entry
“Quod erat demonstrandum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quod%20erat%20demonstrandum. Accessed 23 Apr. 2024.
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