IPA: /ˈpɛtrəˌdɒlər/
KK: /ˈpɛtroʊˌdɑlər/
Money that is earned from selling oil, often used in international trade.
Many countries rely on petrodollars to support their economies.
Petrodollar → It is formed from "petro-" (from Greek "petra", meaning rock or stone, but in this context referring to petroleum or oil) and "dollar" (from the German "thaler", a type of coin). The term "petrodollar" refers to U.S. dollars earned by countries through the sale of oil, linking the commodity of oil with the currency of the dollar.
Think of 'petro-' relating to oil and 'dollar' as the currency, which helps you remember that a petrodollar is money earned from selling oil.
No commonly confused words.