When calculating cross rates, the US Dollar acts as the intermediary for the vast majority of transactions. What is the technical term for the US Dollar in this role?

The Vehicle Currency. Concept: Vehicle Currency Function. Logic: A “Vehicle Currency” is a highly liquid currency used to facilitate trade between two less liquid currencies. Stat: The US Dollar is on one side of approximately 88 percent of all global forex trades. It acts as the “hub” in the global trading network.