abbr.
谨此作答 (quod erat demon- strandum)

[ noun ]
a relativistic quantum theory of the electromagnetic interactions of photons and electrons and muons
<noun.cognition>

QED \QED.\ (k[=u]"[=e]*d[=e]"), n.
Quantum electrodynamics. [abbrev.]
[PJC]


QED \Q.E.D\, QED \QED\(k[=u]"[=e]*d[=e]"), interj. [From Latin,
quod erat demonstrandum, i.e. which was demonstrated.]
Which was demonstrated; -- a phrase used after the conclusion
of some line of reasoning, especially in mathematical or
logical proofs. [abbrev.]
[PJC]


QED \Q.E.D\, QED \QED\(k[=u]"[=e]*d[=e]"), interj. [From Latin,
quod erat demonstrandum, i.e. which was demonstrated.]
Which was demonstrated; -- a phrase used after the conclusion
of some line of reasoning, especially in mathematical or
logical proofs. [abbrev.]
[PJC]