QED

¹

abbreviation for

, Physics.

1. quantum electrodynamics.

Q.E.D.

²

abbreviation for

1. which was to be shown or demonstrated (used especially in mathematical proofs).

QED

abbreviation for

1. quod erat demonstrandum
2. quantum electrodynamics

Word History and Origins

Origin of QED¹

First recorded in 1810–20, Q.E.D. is from Latin quod erat dēmōnstrandum

Word History and Origins

Origin of QED¹

(sense 1) Latin: which was to be shown or proved

Example Sentences

“This notion of QED, and essentially steering a contract, in my humble opinion, is the most serious threat to STRS’s solvency in the last 96 years.”

From Seattle Times

If successful, they could confirm QED once more.

From Science Daily

"Any fintech with serious, long-term ambitions will likely have to find a way to become a bank," says Mike Packer, an investor at QED, a venture capital fund which has backed several lending fintechs.

From Reuters

It produced its first commercial MRI machine, QED 80, in 1980.

From Washington Post

At that point, most mathematicians would declare QED.

From Salon