one-celled

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Definitions from WordNet

Adjective one-celled has 1 sense

single-celled, one-celled - having a single cell (and thus not divided into cells)
Antonym: cellular (indirect, via noncellular)

Definitions from the Web

Term: One-celled

Description:

The term "one-celled" refers to an organism consisting of a single cell. It can be used to describe various living organisms such as bacteria, protists, and some types of algae.

Senses and Usages:

Adjective:

Single-celled: Referring to an organism that is composed of only one cell.

Noun:

One-celled organism: A living organism that consists of a single cell.

Sample Sentences:

Adjective: The one-celled bacteria multiplied rapidly in the warm environment.
Noun: Scientists study the behavior and structure of one-celled organisms under microscopes.