# bacterium

> English word · Noun · IPA /bækˈtɪəɹ.ɪəm/ · frequency rank #27,064

## Definitions
1. A single-celled organism with cell walls but no nucleus or organelles.

## Etymology
From New Latin bactērium, from Ancient Greek βακτήριον (baktḗrion, “small staff”), from βακτηρία (baktēría).

## Easily confused with
- **bacteria** (https://plainspell.com/en/vs/bacteria-vs-bacterium)
- **bacterial** (https://plainspell.com/en/vs/bacterial-vs-bacterium)

## Common misspellings (13)
`abcterium`, `baccterium`, `bacetrium`, `bacteirum`, `bacterimu`, `bacteriumm`, `bacterrium`, `bacteruim`, `bactreium`, `bactterium`, `batcerium`, `bbacterium`, `bcaterium`

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