complex: Meaning and Definition of

com•plex

1. composed of many interconnected parts; compound; composite: a complex highway system.
2. characterized by a very complicated or involved arrangement of parts, units, etc.: complex machinery.
3. so complicated or intricate as to be hard to understand or deal with: a complex problem.
1. (of a word) consisting of two parts, at least one of which is a bound form, as childish, which consists of the word child and the bound form -ish.
2. Seecomplex sentence.
5. pertaining to or using complex numbers: complex methods; complex vector space.

1. an intricate or complicated association or assemblage of related things, parts, units, etc.: the entire complex of our educational system; an apartment complex.
2. a system of interrelated, emotion-charged ideas, feelings, memories, and impulses that is usually repressed and that gives rise to abnormal or pathological behavior.
3. a fixed idea; an obsessive notion.
1. an arbitrary set of elements of a group.
2. a collection of simplexes having specified properties.
5. Also calleda compound in which independently existing molecules or ions of a nonmetalform coordinate bonds with a metal atom or ion. Cf. ligand (def. 2).
6. an entity composed of molecules in which the constituents maintain much of their chemical identity: receptor-hormone complex, enzyme-substrate complex.

1. to form a complex with.

1. to form a complex.