# Millennium Dome

> English word · Proper noun

## Definitions
1. A large building at Greenwich in London, the largest single roofed structure in the world; now renamed "O2".

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