# QED

> English word · Noun · IPA /ˌkjuːiːˈdiː/ · frequency rank #57,650

## Definitions
1. (Partial) initialism of quantum electrodynamics.

## Etymology
From q(uantum) e(lectro)d(ynamics).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/qed