organism
noun
or·gan·ism
ˈȯr-gə-ˌni-zəm 
1
: a complex structure of interdependent and subordinate elements whose relations and properties are largely determined by their function in the whole
The nation is not merely the sum of individual citizens at any given time, but it is a living organism, a mystical body … of which the individual is an ephemeral part …—
Joseph Rossi
Joseph Rossi2
: an individual constituted to carry on the activities of life by means of parts or organs more or less separate in function but mutually dependent : a living being
a multicellular organism
Examples of organism in a Sentence
A human being is a complex organism.
Recent Examples on the Web
Usually there are lots of shaded declining shoots plus pruning wounds where fungal organisms can enter the plants.
—Tom MacCubbin, The Orlando Sentinel, 21 Feb. 2026
Specifically, Archaeology News continues, that aquatic organisms living in hard water can absorb carbon, which contributed to the older dates, which confounded archaeologists for years.
—Maria Mocerino, Interesting Engineering, 21 Feb. 2026
Over time, those tiny organisms do their work.
—Lynn Andriani, Martha Stewart, 21 Feb. 2026
At least 80 translucent organisms were observed swimming in shallow pools inside the cave.
—Hanna Wickes, Charlotte Observer, 20 Feb. 2026
See All Example Sentences for organism
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.
Tom MacCubbin, The Orlando Sentinel, 21 Feb. 2026
Specifically, Archaeology News continues, that aquatic organisms living in hard water can absorb carbon, which contributed to the older dates, which confounded archaeologists for years.
—Maria Mocerino, Interesting Engineering, 21 Feb. 2026
Over time, those tiny organisms do their work.
—Lynn Andriani, Martha Stewart, 21 Feb. 2026
At least 80 translucent organisms were observed swimming in shallow pools inside the cave.
—Hanna Wickes, Charlotte Observer, 20 Feb. 2026
See All Example Sentences for organism
Cite this Entry
“Organism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/organism. Accessed 22 Feb. 2026.
Copy CitationKids Definition
organism
noun
or·gan·ism
ˈȯr-gə-ˌniz-əm
1
: something having many related parts that function together as a whole
2
: an individual living thing that carries on the activities of life by means of organs which have separate functions but are dependent on each other : a living person, plant, or animal
Medical Definition
organism
noun
or·gan·ism
ˈȯr-gə-ˌniz-əm
: an individual constituted to carry on the activities of life by means of organs separate in function but mutually dependent : a living being
Love words? Need even more definitions?
Merriam-Webster unabridged
