glottochronology

noun
glot·to·chro·nol·o·gy | \ ˌglä-tō-krə-ˈnä-lə-jē \

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

Other words from glottochronology

glottochronological \ˌglä-tō-ˌkrä-nə-ˈlä-ji-kəl, -ˌkrō- \ adjective

First Known Use of glottochronology

1953, in the meaning defined above

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The first known use of glottochronology was in 1953

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Britannica.com: Encyclopedia article about glottochronology

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