What does QED mean?

I’ve seen it around places, and I don’t know what it means. Enlighten me, please. (And isn’t there a Doper named QED?)

Use a dictionary - Quod Erat Demonstrandum

QED. And yes, QED is a Doper.

In English ‘As So, It is proved …’

Schoolboys say it is for ‘Quite Easily Done.’

What about Quantum Electrodynamics?

Recent Thread on this:


It is also the name of a short-lived T.V. Show, and the initials of the main character, Quentin E. Deverill.

Loved that show.