The term Aryan language appears in works published in the 19th century and 20th century to mean very old Indo-European languages: The Vedic Sanskrit language The Old Persian language The Avestan language The Bactrian language The term Proto-Aryan is an alternative name of the Proto-Indo-Iranian language In works published in the late 19th century and early 20th century, this term, or the term Proto-Aryan, was sometimes used to describe the Proto-Indo-European language See also Aryan (disambiguation)