From cause + -ation.

• (RP) enPR: kôz, IPA: /kɔːˈzeɪ.ʃən/, [kʰoːˈz̥eɪ.ʃən]
• (America) IPA: /kɔˈzeɪ.ʃən/, [kʰɒːˈz̥eɪ.ʃən]
• (cot-caught) IPA: /kɑˈzeɪ.ʃən/

causation

1. The act of causing.
2. The act or agency by which an effect is produced.
   • 1837, William Whewell, “Earliest Stages of Optics”, in History of the Inductive Sciences, from the Earliest to the Present Times. […], volume I, London: John W[illiam] Parker, […]; Cambridge, Cambridgeshire: J. and J. J. Deighton, →OCLC ↗, book II (History of the Physical Sciences in Ancient Greece), page 100 ↗:

     Aristotle's views led him to try to describe the kind of causation by which vision is produced, instead of the laws by which it is exercised; and the attempt consisted, as in other subjects, of indistinct principles, and ill-combined facts.

3. Cause and effect, considered as a system.

   Synonyms: causality

• French: causation
• German: Ursache
• Russian: причинная связь
• Spanish: causación