Definition of glottochronology
: a linguistic method that uses the rate of vocabulary replacement to estimate the date of divergence for distinct but genetically related languages
glottochronologicalplay \-ˌkrä-nə-ˈlä-ji-kəl, -ˌkrō-\ adjective
First Known Use of glottochronology
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Britannica.com: Encyclopedia article about glottochronology
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