noun (used with a singular verb) Linguistics.

the statistical study of the vocabulary of a language or languages for historical purposes.

Origin of lexicostatistics

First recorded in 1955–60; lexic(on) + -o- + statistics
Related formslex·i·co·sta·tis·tic, lex·i·co·sta·tis·ti·cal, adjective
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British Dictionary definitions for lexicostatistics



(functioning as singular) the statistical study of the vocabulary of a language, with special attention to the historical links with other languagesSee also glottochronology
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