English dictionary, thesaurus, translations & etymology
FreeDict.com
noun

paramecium

pa-ruh-MEE-see-um
Quiz me More like this

Paramecium (noun) means a single-celled, oval-shaped organism belonging to the genus Paramecium. Example: “Under the microscope, a paramecium darted about using its tiny hair-like cilia.”

noun
1
A single-celled, oval-shaped organism belonging to the genus Paramecium.
"Under the microscope, a paramecium darted about using its tiny hair-like cilia."
"The class grew paramecia in a jar of pond water for their biology project."
"Each paramecium moves by beating rows of fine hairs along its body."

How to use paramecium

Learner’s notes

In plain EnglishA paramecium is a tiny oval creature made of just one cell, common in pond water.

When to use it

This is a scientific term used mainly in biology.

Memory tip

The plural is usually paramecia, not parameciums.

Trace the full origin ↓
Easily confused with
Common pairings
a paramecium under the microscope paramecium culture freshwater paramecium
Vocabulary Flow
Build your vocabulary from words like paramecium.
Vocabulary Flow serves the next word, and the next — meaning, pronunciation and an example each time. Practice at your level, or learn English in your own language.
Start vocabulary practice
Test yourself on “paramecium” A quick quiz — meaning, synonyms & usage →

Fill the gap

Can you complete this real example?

Under the microscope, a _____ darted about using its tiny hair-like cilia.

Etymology

Paramecium comes from Ancient Greek, from a word meaning oval, which itself is built on the Greek word for length.

Origin: Ancient Greek

Rhymes for paramecium

See all rhymes for paramecium →

Frequently asked questions

What is a paramecium?
It's a tiny, oval-shaped, single-celled organism found in fresh water. It moves and feeds using fine hair-like structures called cilia.
What is the plural of paramecium?
Both paramecia and parameciums are used, with paramecia being the more traditional form.
Where do paramecia live?
They live in freshwater environments such as ponds, where they feed on bacteria and other small organisms.
What is the meaning of paramecium?
"paramecium" (noun) means a single-celled, oval-shaped organism belonging to the genus Paramecium.