"Tycoon" comes from Japanese Taikun (大君?) which translates into "great prince/baron" and is a title given to a shogun. "Tycoon" has come to mean a "wealthy and powerful business person".
Usage
See Special:Whatlinkshere/Etymology:Tycoon for a list of articles using this term.
This is an etymology page: a page detailing the origins of terminology used in the series in regards to real world culture and history.