Definitions of complexity often depend on the concept of a "system" – a set of parts or elements that have relationships among them differentiated from relationships with other elements outside the relational regime.
Complexity refers to a scientific theory that asserts that some systems display behavioral phenomena that are inexplicable by conventional explanations or analysis of its individual parts.
Complexity is the state of having many different parts connected or related to each other in a complicated way. ...a diplomatic tangle of great complexity.
Definition of complexity noun from the Oxford Advanced Learner's Dictionary. [uncountable] the state of being formed of many parts; the state of being difficult to understand. I was astonished by the size and complexity of the problem. Only now did he understand the full complexity of the problem.
com•plex•i•ty (kəmˈplɛk sɪ ti) n., pl. -ties. 1. the state or quality of being complex; intricacy: the complexity of urban life. 2. something complex: the complexities of foreign policy.
(uncountable) The state of being complex; intricacy; entanglement. The battle was like the grinding of an immense and terrible machine to him. Its complexities and powers, its grim processes, fascinated him.
Complexity refers to a scientific theory that asserts that some systems display behavioral phenomena that are inexplicable by conventional explanations or analysis of its individual parts.