Com`pli*ca"tion (?), n. [L. compliasion: cf. F. complication.] 1. The act or process of complicating; the state of being complicated; intricate or confused relation of parts; entanglement; complexity.

A complication of diseases.

Through and beyond these dark complications of the present, the New England founders looked to the great necessities of future times.

2. (Med.) A disease or diseases, or adventitious circumstances or conditions, coexistent with and modifying a primary disease, but not necessarily connected with it.