Abbreviation for quod erat demonstrandum, used to denote the end of a proof.

Found on http://www.diracdelta.co.uk/science/source/q/e/qed/source.html

Qualitative European Drug Research Network

Found on http://www.encyclo.co.uk/local/20895

Quod erat demonstrandum, Q.E.D., QED Which was the thing to be demonstrated; Which was to be demonstrated. A formula appended at the end of a proof in geometry, or other mathematical solution, with the meaning, 'We have proven the proposition we set out to prove.'

Found on http://www.wordinfo.info/words/index/info/view_unit/3479/3

QED is an abbreviation for Quantum Electrodynamics

Found on http://www.probertencyclopaedia.com/N17.HTM

Abbreviation for quod erat demonstrandum (Latin `which was to be proved`), added at the end of a geometry proof, but also sometimes used in speech and writing. The school child `spoof` translation is `Quite Easily Done`

Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0021375.html

*[play]* QED is a play by American playwright Peter Parnell which chronicles (part of) a day in the life of Nobel Prize-winning physicist Richard Feynman. It presents scenes from a day in Feynman`s life, less than two years before his death, interweaving many strands from Feynman`s biography, from the Manhattan project to the Challenger inqui...

Found on http://en.wikipedia.org/wiki/QED_(play)

*[text editor]* QED is a line-oriented computer text editor that was developed by Butler Lampson and L. Peter Deutsch for the Berkeley Timesharing System running on the SDS 940. It was implemented by L. Peter Deutsch and Dana Angluin between 1965 and 1966. QED (for `quick editor`) addressed teleprinter usage, but systems `for CRT displays [we...

Found on http://en.wikipedia.org/wiki/QED_(text_editor)

I've made my Point

Found on http://www.noslang.com/dictionary/q/

*(quod erat demonstrandum)* proof/evidence has been provided as intended - this is the proof - (traditionally appended to a mathematical solution)

Found on https://www.businessballs.com/glossaries-and-terminology/latin-terms-and-ph

**No exact match found**