The "international dollar" is a term used to denote an artificial currency that measures the purchasing power of different nations. It is similar in concept to a currency exchange rate, but it takes into account the different economic circumstances and standards of living of various countries. Some synonyms for the international dollar include global currency, world money, and global dollar. Other related terms include purchasing power parity, which refers to the comparative value of different currencies, and the Big Mac Index, which uses the price of a McDonald's hamburger to compare purchasing power between countries. These terms all reflect the importance of understanding how different currencies compare in a global economy.