http://en.wikipedia.org/wiki/Aryan
But to paraphrase I might add that aryan was used as an alternative word to indo-european and its use to describe a race is erroneous designation by certian ethnolinguists in the late 19th and early 20th centuries. Indo-european describes a language and so indo-europeans are those people who speak indo-european languages - but race is a whole other matter.
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