(n) :
a linguistic theory according to which the similarities between
Sanskrit,
Persian,
Greek and
Latin justify a shared mother-language of common origin, based on the "Aryan" theory of philologist
Sir William Jones; also known as
Indo-Germanic under the extensive comparative work of these and other old languages by linguist Franz Bopp; a major language family which includes many of the languages between Europe and India, with notable Indic, Iranian and European sub-branches