Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- abbr. Latin quod erat demonstrandum (which was to be demonstrated)
Wiktionary
- interj. Quod erat demonstrandum (Latin what had to be proved or what was to be demonstrated).
- n. Quantum electrodynamics.
GNU Webster's 1913
- n. abbreviated Quantum electrodynamics.
Etymologies
- Initialisms. (Wiktionary)
Examples
“Coulomb's law is governed by the magnitude of the vertex which is the electric charge e in QED and for the diagram above it is proportional to the square of e and is the Fine Structure Constant = 1/137.”
“Calculations starting from this picture have reproduced the experimental data by Kusch and Lamb to an astonishing degree of accuracy and modern QED is now considered to be the most exact theory in existence.”
“This progress in QED turned out to be of the greatest importance also for the description of phenomena at higher energies.”
“So saying that field theory is sometimes called QED, is like saying algebra is sometimes called the quadratic equation.”
“Then the independent sales company, called QED, went to the American Film Market in Santa Monica, and they were able to raise the money from pre-selling rights to the movie, to independent distributors around the world.”
“It was then that Ms. Meyer and Ms. Flemal decided to start a home-schooling education service called QED (Quality Education by Design), a consulting firm that pairs parents of children in pre-K through middle school with private teachers.”
“Homeschooling: Not Just for Cult Members and Celebs! introduces Melissa Meyer and Teri Flemal who have founded a company called QED (Quality Education by Design).”
“BTW, a policy on which I expressed no opinion in earlier comments (having none since it appears to involve technical legal issues of which I am totally ignorant) contrary to BdP's accusation "you apologists for government racial discrimination" - to which my only response is "QED".”
“QED," replied Harry Forsyth, in a tone of assent which pleased the fakir mightily.”
“QED" was not intelligible to him, but it sounded very well indeed, he thought.”
Lists
These user-created lists contain the word ‘QED’.
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Visuals
A list of words which yield surprising, beautiful, amusing, or otherwise noteworthy images here on Wordnik.
photochrom, fufluns, thank you, cool l..., postcard, picture postcard, cricket, physiological ill..., Gakuryū Ishii, ametropia, One Froggy Evening, rhodopsin, Santiago Calatrava and 636 more...
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Arcadia, a play by Tom Stoppard
theodolite, Arcadia, carnal embrace, QED, sin of Onan, Fermat's last the..., landskip, bootboy, yesterday's upsta..., whole numbers, rice pudding, cabbages and 86 more...
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tongue tippers
the ones that are just on the tip of the tongue, the ones that should be made celebrated members of my vocabulary, thank you
natant, prurient, antipodal, puerile, equipoise, choler, sui generis, exemplary, lodestar, rhetoric, bon mot, adjudicate and 91 more...
Tweets
Looking for tweets for QED.
alexz QED is too passive.
From now on, I will end my proofs with ita ibi*
(*so there) Feb 8, 2013