nope I think the definition is clear enough, the international currency is a currency that can be used in any country in the world while the euro can only be used in Europe alone? in contrast to the dollar that can be used anywhere because the whole world has long ago set the dollar as a global currency , looking at the possible definition of bitcoin can also be said as a global currency because bitcoin can be used anywhere in all corners of the world
I think you got the wrong definition about international currency, the international currency is a currency that accepted worldwide and can be exchange anywhere in the world, not to mention only US DOLLAR is the ONLY currency that accepted everywhere in the world when we doing retail transaction, if you talk about euro only be used in europe alone then lots of other countries also prefer to use their own currency for retail transaction, because why would you bother using other country currency to do retail transaction in your own country?? Its like a currency invasion and not to mention it make deflation for your own currency.
Bitcoin can be used anywhere in all corners of the world, but can you purchase your lunch with bitcoin? I think some other countries and some We*dys in russia has accepted payment with crytocurrency, but it was just SOME, not ALL corners of the world and did you mention about bitcoin trading that just been legalize by CFTC and SEC but not in the third party country, because of that i dont think bitcoin become an international currency, at least not for now