Euro cheques, electronic transfers, banking, etc.) at midnight on 1 January 1999, when the national currencies of participating countries (the eurozone) ceased to exist independently. Their exchange rates were locked at fixed rates against each other. The euro thus became the successor to the European Currency Unit (ECU). The notes and coins for the old currencies, however, continued to be used as legal tender until new euro notes and coins were introduced on 1 January 2002. The changeover period during which the former currencies' notes and coins were exchanged for those of the euro lasted about two months, until 28 February
Language and the euro but the euro is popularly used, particularly by individuals wanting to convert their savings into a more stable currency. "Euro" has colloquially been pronounced in the English fashion since its inception. In response to criticism of the widespread English pronunciation of "euro", the Turkish Language Association officially introduced "avro" into Turkish ("av" being the first syllable of the Turkish word for Europe, "Avrupa") in 1998. A concerted campaign by the Turkish Language Association has begun to blossom in recent years, with most sections of the Turkish media now using the new word. It has yet to enter widespread colloquial use,