purchasing power parity
noun[U]
ECONOMICSukus(abbreviationPPP)ameasureof how much oneunitof acurrencywouldbuyin differentcountries,calculatedbycomparingthepriceof one or moreparticularproductsin eachcountry. Purchasingpowerparityis used tojudgeifcurrencyexchangeratesarecorrectinrelationto what can beboughtwith differentcurrencies:
Thetheoryofpurchasingpowerparitysays that, overtime,exchangeratesshouldequalizethepricesof anidenticalbasketofgoodsandservicesin any twocountries.