organism

noun

or·​gan·​ism ˈȯr-gə-ˌni-zəm How to pronounce organism (audio)
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 partJoseph Rossi
2
: 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
organismic adjective
or less commonly organismal
organismically adverb

Examples of organism in a Sentence

A human being is a complex organism.
Recent Examples on the Web
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.
These vents are rich in iron sulfides, compounds that play a role in carbon fixation, a fundamental process by which organisms convert carbon dioxide into organic molecules. Thomas G. Moukawsher, Newsweek, 2 Dec. 2024 Sometimes these mutations have little effect on its ability to transmit between organisms or cause severe disease. Susanne Rust, Los Angeles Times, 26 Nov. 2024 Author and journalist Ed Yong uses the German term umwelt to describe an organism’s unique sensory perspectives. Melanie Stetson Freeman, The Christian Science Monitor, 22 Nov. 2024 How to Tell When Your Water Bottle Is Dirty Acceptable levels of heterotrophic organisms, also known as heterotrophic plate counts (HPC), vary by country. Kayla Blanton, Outside Online, 17 Nov. 2024 See all Example Sentences for organism 

Word History

First Known Use

circa 1774, in the meaning defined at sense 1

Time Traveler
The first known use of organism was circa 1774

Dictionary Entries Near organism

Cite this Entry

“Organism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/organism. Accessed 23 Dec. 2024.

Kids Definition

organism

noun
or·​gan·​ism ˈȯr-gə-ˌniz-əm How to pronounce organism (audio)
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
organismic adjective

Medical Definition

organism

noun
or·​gan·​ism ˈȯr-gə-ˌniz-əm How to pronounce organism (audio)
: an individual constituted to carry on the activities of life by means of organs separate in function but mutually dependent : a living being
organismic adjective
also organismal
organismically adverb

More from Merriam-Webster on organism

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