From Longman Business Dictionaryparallel marketˈparallel ˌmarket (also parallel money market) [countable]FINANCE a market which trades foreign currencies, stocks, shares etc, and which runs at the same time as a country’s own market. Parallel markets mean that a country has less control over its economyThe government wants to keep control of raw materials while pursuing a parallel market economy.The growth of parallel markets has created easier lending and borrowing. → market
