/ Dictionary / Index L lexicostatistics: Meaning and Definition of Find definitions for: lex•i•co•sta•tis•tics Pronunciation: (lek"si-kō-stu-tis'tiks), [key] — n. (used with a sing. v.) Ling. the statistical study of the vocabulary of a language or languages for historical purposes. Cf. glottochronology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lexicostatistics (Thesaurus) lexicon Lexington Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language