Definition for qed (2 of 2)


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

Origin of Q.E.D.

First recorded in 1810–20, Q.E.D. is from the Latin word quod erat dēmōnstrandum
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Examples from the Web for qed

  • QED” was not intelligible to him, but it sounded very well indeed, he thought.

British Dictionary definitions for qed


abbreviation for

quod erat demonstrandum
quantum electrodynamics

Word Origin for QED

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