言げん語ご年ねん代だい学がくMeaningsNoun1. glottochronologyKanji used言say語language年year代substitute学studyComposed of言げん語ごlanguageNoun年ねん代だいage; era; period; dateNoun学がくlearning; scholarship; study; erudition; knowledge; education; study of ...; -ology; -icsNoun