Glottochronology

//ˌɡlɑːtoʊkɹəˈnɑːləd͡ʒi// noun

Definitions

Noun
  1. 1
    The method or study in estimating the time at which a related language diverged from its common ancestor. uncountable
  2. 2
    the determination of how long ago different languages evolved from a common source language wordnet

Etymology

From glotto- + chronology.

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