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.
Balancing investment against potential ROI remains a delicate yet critical task, especially given the ongoing technical complexities of integrating LLMs into existing systems. Janakiram Msv, Forbes.com, 19 June 2025 And that doctrine — developed in Gaza where targets are five minutes away — has now been adapted to Iran, with all the complexity that entails. Efrat Lachter, FOXNews.com, 19 June 2025 This documentary captures the full complexity of her experience in a way that feels both intimate and universal. Chris Gardner, HollywoodReporter, 19 June 2025 The complexity of the current situation requires that our military take a more direct role in securing our southern border than in the recent past. Hannah Parry, MSNBC Newsweek, 19 June 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

Browse Nearby Words

Cite this Entry

“Complexity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/complexity. Accessed 25 Jun. 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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