QED (noun)
definition:
shortened form of "quod erat demonstrandum," usually used at the end of a mathematical or scientific proof to show the desired outcome has been accomplished
example:
"All fish live in water – a trout is a fish, so it must live in water. QED."
QED (noun)
definition:
a relativistic quantum theory of the electromagnetic interactions of photons and electrons and muons
example:
"My physics teacher got a doctorate in QED."
Synonyms
Quantum Electrodynamics