complex
adj//kɑmˈplɛks//komplex, komplicerad, invecklad
Not simple, easy, or straightforward; complicated.
(mathematics, of a number) Having the form a + bi, where a and b are real numbers and i is (by definition) the imaginary square root of −1.
(mathematics, analysis, of a function) Whose range is a subset of the complex numbers.
(mathematics, algebra) Whose coefficients are complex numbers; defined over the field of complex numbers.
A collection of buildings with a common purpose, such as a university or military base.
An assemblage of related things; a collection.
(psychology) A group of emotionally charged ideas or mental factors, unconsciously associated by the individual with a particular subject, arising from repressed instincts, fears, or desires and often resulting in mental abnormality.
(chemistry) A structure consisting of a central atom or molecule weakly connected to surrounding atoms or molecules, as for example coordination complexes in inorganic chemistry and protein complexes in biochemistry.