complexity

noun

com·​plex·​i·​ty kəm-ˈplek-sə-tē How to pronounce complexity (audio)
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
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.
Learn more about the complexity of how cumbia has evolved in Peru and see photos of its influence in the country. NPR, 16 Oct. 2025 These complexities have come at the expense of the consumer, who now pays an average of $88 per month to watch sports on streaming platforms versus $64 per month for those not watching sports, according to tech research firm InterDigital. Eleanor Pringle, Fortune, 16 Oct. 2025 These complexities might explain why photographs in fiction are often passed over in awkward silence. Literary Hub, 16 Oct. 2025 At over 1,400 years old, the underground facility offers an unprecedented look into feudal Korean culture’s architectural complexities and advancements. Andrew Paul, Popular Science, 16 Oct. 2025 See All Example Sentences for complexity

Word History

Etymology

complex entry 2 + -ity, perhaps after French complexité

First Known Use

1661, in the meaning defined at sense 1

Time Traveler
The first known use of complexity was in 1661

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Cite this Entry

“Complexity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/complexity. Accessed 21 Oct. 2025.

Kids Definition

complexity

noun
com·​plex·​i·​ty kəm-ˈplek-sət-ē How to pronounce complexity (audio)
käm-
plural complexities
1
: something complex
the complexities of the English language
2
: the quality or state of being complex

More from Merriam-Webster on complexity

Last Updated: - Updated example sentences
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