Proto-Indo-European
adj//-ˌjɔːɹəˈ-//protoindoeuropeisk, urindoeuropeisk, urindoeuropeiska, indoeuropeiska urspråket, protoindoeuropeiska
(linguistics, anthropology) Of or pertaining to the Proto-Indo-European language, or the people who spoke it.
(linguistics, uncountable) The reconstructed ancestor language or protolanguage of the Indo-European family of languages, which includes most European, Iranian, and Indian languages.