Complexity - Wikipedia 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 | Definition, Theory, Facts | Britannica 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 noun - Definition, pictures, pronunciation and . . . 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