Q.E.D. or QED is an initialism of the Latin phrase quod erat demonstrandum, meaning "that which was to be demonstrated". Literally, it states "what was to be shown". [1]

QED definition: 1. abbreviation for the Latin phrase "quod erat demonstrandum": written or said after an argument…. Learn more.

Oct 8, 2018 · What does Q.E.D. mean? Q.E.D. is an acronym for the Latin phrase quod erat demonstrandum, a fancy way to show off you just logically proved something.

QED is an abbreviation of the Latin phrase “quod erat demonstrandum,” /ˌkwɑːdˈeɚˌɑːtˌdɛmənˈstrændəm/ which means “which was to be demonstrated.”

"Q.E.D." is an abbreviation derived from the Latin phrase "quod erat demonstrandum," which translates to "which was to be demonstrated" in English. It is used at the end of a proof or …

What does the abbreviation QED stand for? Meaning: quantum electrodynamics.

Definition of QED abbreviation in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

May 17, 2021 · Overall, the abbreviation Q.E.D. stands for the Latin quod erat demonstrandum which means “which was to be demonstrated.” Mathematicians and philosophers use this …

Jul 6, 2025 · “Q.E.D.” stands for the Latin phrase “ quod erat demonstrandum.” Translated into English, it means “ which was to be demonstrated ” or “ which had to be proven.”

Nov 14, 2025 · "Q.E.D." (sometimes written "QED") is an abbreviation for the Latin phrase "quod erat demonstrandum" ("that which was to be demonstrated"), a notation which is often placed …