-
- To save this word, you'll need to log in.
unicellular
adjective
uni·cel·lu·lar
ˌyü-ni-ˈsel-yə-lər
: having or consisting of a single cell
unicellular microorganisms
Examples of unicellular in a Sentence
Recent Examples on the Web
This would mean that the transition from unicellular to multicellular life was not a leap requiring entirely new genes but rather an evolutionary refinement of existing genetic mechanisms.
—
Scott Travers, Forbes, 11 Dec. 2024
There are lots of other things in between them — things that branched off the lineage leading to plants and things that branched off the lineage leading to animals — that are mostly unicellular organisms.
—
Janna Levin, Quanta Magazine, 24 Oct. 2024
As a result, populations of unicellular organisms spiked.
—
Eric Lagatta, USA TODAY, 23 Oct. 2024
After 30 days, the algae in the middle were still unicellular.
—
Veronique Greenwood, WIRED, 11 Aug. 2024
See all Example Sentences for unicellular ![](/dist-cross-dungarees/2025-02-06--20-43-45-x16ho/images/svg/redesign/arrow-right-exemplar.svg)
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Word History
First Known Use
1858, in the meaning defined above
Dictionary Entries Near unicellular
Cite this Entry
“Unicellular.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unicellular. Accessed 8 Feb. 2025.
Kids Definition
unicellular
adjective
uni·cel·lu·lar
ˌyü-ni-ˈsel-yə-lər
: having or consisting of a single cell
unicellular microorganisms
Medical Definition
unicellular
adjective
uni·cel·lu·lar
ˌyü-ni-ˈsel-yə-lər
: having or consisting of a single cell
unicellular microorganisms
Love words? Need even more definitions?
Merriam-Webster unabridged
Share