Definition: Overlap product
Purchasing power parities
A product that appears on the product lists of two or more separate groups of countries for the purpose of combining the groups in a single multilateral comparison. The use of overlap products is an alternative to linking groups of countries through bridge countries.
Eurostat, Organization for Economic Cooperation and Development (OECD), "Eurostat-OECD Methodological Manual on Purchasing Power Parities", Publications Office of the European Union, Luxembourg, 2012