[kom-pli-key-shuh
n] 
| 1. | the act of complicating. |
| 2. | a complicated or involved state or condition. |
| 3. | a complex combination of elements or things. |
| 4. | something that introduces, usually unexpectedly, some difficulty, problem, change, etc.: Because of the complications involved in traveling during the strike, we decided to postpone our trip. |
| 5. | Pathology. a concurrent disease, accident, or adverse reaction that aggravates the original disease. |
| 6. | the act of forming a unified idea or impression from a number of sense data, memories, etc. |
complication com·pli·ca·tion (kŏm'plĭ-kā'shən)
n.
A pathological process or event occurring during a disease that is not an essential part of the disease; it may result from the disease or from independent causes.