共きょう通つう基き語ご

noun

protolanguage

Technical term in historical linguistics for a reconstructed ancestral language from which a family of languages is derived.

• インド・ヨーロッパ祖そ語ごは多おおくの現げん代だい言げん語ごの共きょう通つう基き語ごと考かんがえられている。

  Proto-Indo-European is considered the protolanguage of many modern languages.