Complex

The term complex can designate:

Generally

• As an adjective, synonymous with complicated or difficult; quality of complexity.
• As a noun, it may refer to a set of buildings or facilities grouped for a common activity (such as "inhabitation complex" or "industrial complex").

Architecture

• Complex, in architecture and urbanism, group or block of buildings or architectural spaces that are structurally connected to each other and are perceived as a unit.

Math

• Complex number, element of the complex numbers set.

Psychology

• For the concept used in psychology in general and psychoanalysis, as well as mainly in analytical psychology, see complex (psychology).

Chemistry

• A complex (also called coordination compound or metal complex), type of molecular structure.
• In biochemistry, a enzyme complex.