# OS

> English word · Proper noun · IPA /ˌoʊ ˈɛs/ · frequency rank #6,077

## Definitions
1. Initialism of Owen Sound.
2. The Ordnance Survey, official mapping agency in Great Britain (see also the noun below).
3. Initialism of Old Saxon.

## Easily confused with
- **oz** (https://plainspell.com/en/vs/os-vs-oz)
- **OT** (https://plainspell.com/en/vs/os-vs-ot)
- **ou** (https://plainspell.com/en/vs/os-vs-ou)
- **ow** (https://plainspell.com/en/vs/os-vs-ow)
- **ox** (https://plainspell.com/en/vs/os-vs-ox)
- **oy** (https://plainspell.com/en/vs/os-vs-oy)
- **ov** (https://plainspell.com/en/vs/os-vs-ov)
- **out** (https://plainspell.com/en/vs/os-vs-out)
- **our** (https://plainspell.com/en/vs/os-vs-our)
- **own** (https://plainspell.com/en/vs/os-vs-own)
- **owe** (https://plainspell.com/en/vs/os-vs-owe)
- **owl** (https://plainspell.com/en/vs/os-vs-owl)
- **OST** (https://plainspell.com/en/vs/os-vs-ost)
- **ova** (https://plainspell.com/en/vs/os-vs-ova)
- **OTC** (https://plainspell.com/en/vs/os-vs-otc)
- **OTT** (https://plainspell.com/en/vs/os-vs-ott)
- **oss** (https://plainspell.com/en/vs/os-vs-oss)
- **Ota** (https://plainspell.com/en/vs/os-vs-ota)
- **OSI** (https://plainspell.com/en/vs/os-vs-osi)
- **oth** (https://plainspell.com/en/vs/os-vs-oth)

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