I know that there are two other links about this word on wordreference, but I'm still not understanding it. Could someone please explain what pesificación is specifically, and how you would put it into English? (Not "pesify") Here is an example: "A diferencia del Ecuador, el Gobierno de Cristina Fernández está impulsando la pesificación de la economía, lo que significa expulsar al dólar." How do you "expulsar" the dollar? Did Argentina ever use the U.S. dollar?