A problem. (clarification of this definition is needed)
A network of interconnected systems.
A collection of buildings with a common purpose, such as a university or military base.
An assemblage or collection of related things, such as a cluster of thunderstorms, wildfires, or closely related species.
(psychoanalysis) A collection of ideas caused by repressed emotions that leads to an abnormal mental condition
(informal, by extension) A vehement, often excessive psychological dislike or fear of a particular thing.
(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.
(mathematics) A complex number.
(linguistics) A multimorphemic word, one with several parts, one with affixes.
(chemistry, intransitive) To form a complex with another substance
(transitive) To complicate.
Made up of multiple parts; composite; not simple.
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, mathematical 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.
(geometry) A curve, polygon or other figure that crosses or intersects itself.