Causation \Cau*sa"tion\, n. The act of causing; also the act or agency by which an effect is produced.

The kind of causation by which vision is produced. --Whewell.

Law of universal causation, the theoretical or asserted law that every event or phenomenon results from, or is the sequel of, some previous event or phenomenon, which being present, the other is certain to take place.

Source: Webster's Revised Unabridged Dictionary (1913)