Definition - A term used by 19th-century philologists for the common ancestor of many European and Asian languages. It has been superseded by the term Indo-European.

1. Its denotation is now restricted to the Indo-Iranian branch of the Indo-European family of languages.

Example -
The term derives from the Sanskrit arya, noble.

Oxford English Dictionary -
Its first citation is from 1839:
"The Medo-Persic, or Arian branch; at the head of which stands the Zend."
(Penny Cycl. XIII. 309/1)

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