You searched for: “lexicostatistics
lexicostatistics (s) (noun) (no plural)
1. A technique used in glottochronology: Lexicostatistics is used in order to calculate how long ago various languages developed from a mutual source language.
2. The study of words between languages for historical reasons: An interesting factor in lexicostatistics is the comparison of two languages relating to changes in a list of common vocabulary terms and the sharing of common root words.