Bacteria
/bakˈtɪəriə/
Meaning & Definition
noun
Plural form of bacterium; microscopic single-celled organisms that exist as independent (free-living) organisms or as parasites.
Bacteria are essential for nutrient cycling in ecosystems.
A group of microorganisms that can cause diseases in humans, animals, and plants.
Some bacteria are harmful, leading to infections such as strep throat.
Prokaryotic microorganisms that have a wide range of shapes and metabolic types, found in various environments.
Bacteria can be found in extreme environments, such as hot springs and deep-sea vents.
Etymology
From the New Latin 'bacterium', derived from the Greek 'baktērion,' meaning 'small staff.'
Common Phrases and Expressions
good bacteria
Beneficial bacteria that help in digestion and other processes.
bad bacteria
Harmful bacteria that can cause infections or diseases.
bacterial infection
An infection caused by bacteria.
Related Words
antibiotics
Substances that kill or inhibit the growth of bacteria.
microbiology
The branch of science that studies microorganisms, including bacteria.
pathogen
An organism that causes disease, often referring to bacteria.
Slang Meanings
Bugs
I can't eat that meat; it's full of bugs.
Germs
Wash your hands; those germs are everywhere!