Pronunciation: (lek'si-kon", -kun),[key] —n., —pl.lex•i•caPronunciation: (lek'si-ku),[key]lex•i•cons. 1. a wordbook or dictionary, esp. of Greek, Latin, or Hebrew.
2. the vocabulary of a particular language, field, social class, person, etc.
3. inventory or record: unparalleled in the lexicon of human relations. 4. Ling. a. the total inventory of morphemes in a given language.
b. the inventory of base morphemes plus their combinations with derivational morphemes.