中文翻译与英英解释

n.
【语言学】同源语言演变史学。

the determination of how long ago different languages evolved from a common source language; "he mapped the glottochronology of the Romance languages"

Glottochronology (from Att.-Greek γλ?ττα “tongue, language” and χρóνο? “time”) is that part of lexicostatistics dealing with the chronological relationship between languages.