# CM

> English word · Noun · frequency rank #4,512

## Definitions
1. Initialism of chief minister.
2. A member of the Order of Canada.
3. Initialism of commercial message (“commercial video ad”).
4. Initialism of Candidate Master.
5. Initialism of command module.
6. Initialism of cryptographic module.
7. Initialism of configuration management.
8. Initialism of cruise missile.
9. Initialism of Cohen-Macaulay.
10. Initialism of common meter.

## Etymology
Sense "commercial" is a borrowing from Japanese CM (CM, “commercial video ad”), from English commercial + message.

## Easily confused with
- **co** (https://plainspell.com/en/vs/cm-vs-co)
- **CT** (https://plainspell.com/en/vs/cm-vs-ct)
- **CR** (https://plainspell.com/en/vs/cm-vs-cr)
- **cs** (https://plainspell.com/en/vs/cm-vs-cs)
- **cp** (https://plainspell.com/en/vs/cm-vs-cp)
- **CV** (https://plainspell.com/en/vs/cm-vs-cv)
- **CU** (https://plainspell.com/en/vs/cm-vs-cu)
- **CW** (https://plainspell.com/en/vs/cm-vs-cw)
- **CX** (https://plainspell.com/en/vs/cm-vs-cx)
- **cz** (https://plainspell.com/en/vs/cm-vs-cz)
- **CQ** (https://plainspell.com/en/vs/cm-vs-cq)
- **cut** (https://plainspell.com/en/vs/cm-vs-cut)
- **cup** (https://plainspell.com/en/vs/cm-vs-cup)
- **cry** (https://plainspell.com/en/vs/cm-vs-cry)
- **cop** (https://plainspell.com/en/vs/cm-vs-cop)
- **CNN** (https://plainspell.com/en/vs/cm-vs-cnn)
- **con** (https://plainspell.com/en/vs/cm-vs-con)
- **cow** (https://plainspell.com/en/vs/cm-vs-cow)
- **cos** (https://plainspell.com/en/vs/cm-vs-cos)
- **cum** (https://plainspell.com/en/vs/cm-vs-cum)

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