From HomoExcelsior

1. Consisting of interconnected or interwoven parts; composite. 2. a complex carbohydrate. 3. Involved or intricate, as in structure; complicated. 4. Consisting of at least one bound form. Used of a word. 5. Consisting of an independent clause and at least one other independent or dependent clause. Used of a sentence. 6. a complex of cities and suburbs; the military-industrial complex. 7. A group of related, often repressed ideas and impulses that compel characteristic or habitual patterns of thought, feelings, and behavior. 8. An exaggerated or obsessive concern or fear. 9. The combination of factors, symptoms, or signs of a disease or disorder that forms a syndrome.