Added 9 October 2026
bacterium
/bækˈtɪəɹ.ɪəm/ noun
In Latin: bactērium Wiktionary
noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about bacterium at Wordnik → Where our words come from →
- A single-celled organism with cell walls but no nucleus or organelles.
Origin
From New Latin bactērium, from Ancient Greek βακτήριον (baktḗrion, “small staff”), from βακτηρία (baktēría).
From Wiktionary, via Kaikki.org (CC BY-SA)