印いん欧おう祖そ語ごいんおうそごMeanings1nounProto-Indo-EuropeanRefers to the reconstructed ancestor language of the Indo-European family. Used in linguistics. Also called 印欧基語.See also: 印欧基語印いん欧おう祖そ語ごは紀き元げん前ぜん4000年ねん頃ごろに話はなされていたと考かんがえられている。Proto-Indo-European is thought to have been spoken around 4000 BCE.
