HomeDictionaryBbacteria

Note: The translation for this entry is currently under quality review. Some content is temporarily displayed in English only.

bacteria

/bækˈtɪəɹ.ɪ.ə/

The word "bacteria" is the plural form of "bacterium". In everyday conversation, people often use "bacteria" for both one organism and many organisms, but in scientific writing, "bacterium" is used for a single cell. Because it is grammatically plural, you should typically use it with plural verbs. For example, say "Bacteria are found everywhere" rather than "Bacteria is found everywhere".

💬Casual Conversation

🎬Tuesday afternoon; Sarah is staring at a smudge on her desk while David is in a meeting.
David Smith

Just read that the office keyboards are breeding grounds for bacteria. We need to pivot to a 'hygiene-first' workspace.

David Smith
Sarah
Sarah

I'm barely keeping my head above water, David. Please just leave me alone.

💡
David uses a corporate buzzword ('pivot') to describe a simple cleaning task, while Sarah uses the idiom 'keeping my head above water' to express that she is overwhelmed with work and lacks the mental capacity for his distractions.

Meanings

noun

Microscopic, single-celled organisms that lack a distinct nucleus and can be found in nearly every environment on Earth; some are beneficial while others cause disease.

"The scientist studied the bacteria culture under a microscope to identify the strain."

Last Updated: May 22, 2026Report an Error