complexity
noun
com·plex·i·ty
kəm-ˈplek-sə-tē 
käm-
plural complexities
1
: something complex
the complexities of the murder trial
2
: the quality or state of being complex
the complexity of the contract
Examples of complexity in a Sentence
He was impressed by the complexity of the music.
The diagram illustrates the complexity of the cell's structure.
He doesn't grasp the complexity of the situation.
Recent Examples on the Web
And in an industry often defined by complexity, that clarity is both refreshing and valuable.
—
Daniel Fusch, USA Today, 4 Dec. 2025
Nearly a decade later, after the trial was postponed several times because of its complexity, Kardashian took the stand to testify against the suspects involved in the robbery.
—Hannah Sacks, PEOPLE, 4 Dec. 2025
Due to these mind-bending sizes and the resulting complexity of simulating black hole accretion, previous models have used shortcuts to simplify the problem of radiation flows.
—Chris Young, Interesting Engineering, 4 Dec. 2025
Now, the submarine will be delivered within two years unless it is delayed by the technical complexities involved.
—Amanda Castro, MSNBC Newsweek, 4 Dec. 2025
See All Example Sentences for complexity
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Daniel Fusch, USA Today, 4 Dec. 2025
Nearly a decade later, after the trial was postponed several times because of its complexity, Kardashian took the stand to testify against the suspects involved in the robbery.
—Hannah Sacks, PEOPLE, 4 Dec. 2025
Due to these mind-bending sizes and the resulting complexity of simulating black hole accretion, previous models have used shortcuts to simplify the problem of radiation flows.
—Chris Young, Interesting Engineering, 4 Dec. 2025
Now, the submarine will be delivered within two years unless it is delayed by the technical complexities involved.
—Amanda Castro, MSNBC Newsweek, 4 Dec. 2025
See All Example Sentences for complexity
Cite this Entry
“Complexity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/complexity. Accessed 6 Dec. 2025.
Copy CitationKids Definition
complexity
noun
com·plex·i·ty
kəm-ˈplek-sət-ē
käm-
plural complexities
1
: something complex
the complexities of the English language
2
: the quality or state of being complex
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