WordGarden.ioamoeba
C2Pronunciation
UK
- /əmˈiːbə/
US
- /əˈmibə/
Meanings
Noun
a microscopic single-celled organism that changes shape to move and feed
Beyond the definition
Imagine a tiny, wobbly drop of jelly floating in a pond—that's kind of like an amoeba! It's a single-celled creature, meaning it's a whole living thing made up of just one cell. Unlike you and me with trillions of cells, an amoeba does everything—moves, eats, reproduces—all within that one little package. They're famous for changing shape constantly, using temporary "feet" called pseudopods to creep along and engulf their food. You might learn about them in biology class when studying microscopic life or protists!
Once upon a time, someone peered into a drop of pond water under a microscope and found a tiny creature that seemed to be made of living jelly. That creature was an amoeba—a fascinating single-celled organism that's still all around us today. The word "amoeba" comes from a Greek word meaning "change," which perfectly describes its most striking feature: it has no fixed shape. It's constantly shifting and flowing, extending temporary projections called pseudopods ("false feet") to move around and capture food such as bacteria or other tiny organisms.
Amoebas live in damp environments—freshwater, moist soil, and sometimes inside the bodies of animals (including humans). They reproduce by simply splitting themselves in two, a process called binary fission. While they seem simple, amoebas are incredibly resilient and adaptable. Many can survive harsh conditions by forming a protective cyst around themselves until things improve, and a few species can cause disease.
Beyond biology, "amoeba" is sometimes used metaphorically to describe something blob-like, loosely organized, or constantly changing—like "The company's structure became an amoeba, shifting with every new project." But at its heart, the word refers to that remarkable little single-celled life form, a testament to the incredible diversity and adaptability of nature. So next time you think about microscopic worlds, remember the amazing, ever-changing amoeba!
Examples
- 1
Microscope observation
Under the microscope, we watched an amoeba slowly change shape.
- 2
Biology class
In biology class, the students learned how an amoeba moves and feeds.
- 3
Disease risk
Some amoebas can live harmlessly in water, while others can cause disease.
See also
Forms and spellings
3 forms open this card.
Main spelling
- amoebanoun
Forms
- amoebaspluralnoun
- amoebaepluralnoun