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complexity

[kuh m-plek-si-tee] /kəmˈplɛk sɪ ti/
noun, plural complexities for 2.
1.
the state or quality of being complex; intricacy:
the complexity of urban life.
2.
something complex:
the complexities of foreign policy.
Origin of complexity
1715-1725
First recorded in 1715-25; complex + -ity
Related forms
intercomplexity, noun, plural intercomplexities.
overcomplexity, noun
supercomplexity, noun, plural supercomplexities.
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Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for complexity

complexity

/kəmˈplɛksɪtɪ/
noun (pl) -ties
1.
the state or quality of being intricate or complex
2.
something intricate or complex; complication
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for complexity
n.

1721, "composite nature," from complex (adj.) + -ity. Meaning "intricacy" is from 1790. Meaning "a complex condition" is from 1794.

Online Etymology Dictionary, © 2010 Douglas Harper
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26
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