cau·sa·tion (kô-z??sh?n)n.1. The act or process of causing.2. A cause.3. Causality.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.causation (k???ze???n) n1. the act or fact of causing; the production of an effect by a cause2. the relationship of cause and effect cau?sational adjCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014cau?sa?tion (k??ze? ??n) n. 1. the act or fact of causing. 2. the relation of cause to effect; causality. 3. anything that produces an effect; cause. [1640?50;