# regio

> English word · Noun · frequency rank #84,673

## Definitions
1. Any large area of a planet or moon that is strongly differentiated from neighbouring areas by colour or albedo.
2. A district of a city.

## Etymology
Learned borrowing from Latin regiō. Doublet of region.

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