Pronunciation: (lek'si-kon", -kun), [key]
—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.
a. the total inventory of morphemes in a given language.
b. the inventory of base morphemes plus their combinations with derivational morphemes.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.