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Definition of complexity noun from the Oxford Advanced Learner's Dictionary

complexity

noun
 
/kəmˈpleksəti/
 
/kəmˈpleksəti/
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  1. [uncountable] the state of being formed of many parts; the state of being difficult to understand
    • the increasing complexity of modern telecommunication systems
    • I was astonished by the size and complexity of the problem.
    Extra Examples
    • Only now did he understand the full complexity of the problem.
    • The author has managed to capture the complexity of this man.
    • The video emphasizes the complexity of this debate.
    • a pay system of unnecessary complexity
    • the linguistic complexity of the Caribbean region
    Oxford Collocations Dictionaryadjective
    • considerable
    • enormous
    • extraordinary
    … of complexity
    • degree
    • level
    verb + complexity
    • convey
    • demonstrate
    • illustrate
    complexity + verb
    • arise (from something)
    preposition
    • of… complexity
    See full entry
  2. complexities
    [plural] the features of a problem or situation that are difficult to understand
    • the complexities of the system
    Extra Examples
    • The critics failed to understand the structural complexities of the novel's language.
    • a love story which explores the complexities of emotional infidelity
    • These programs create additional complexities to the pricing system.
    Oxford Collocations Dictionaryadjective
    • considerable
    • enormous
    • extraordinary
    … of complexity
    • degree
    • level
    verb + complexity
    • convey
    • demonstrate
    • illustrate
    complexity + verb
    • arise (from something)
    preposition
    • of… complexity
    See full entry
See complexity in the Oxford Advanced American DictionarySee complexity in the Oxford Learner's Dictionary of Academic English
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