Lex"i*con (?), n. [Gr. (sc.), neut. of of or belonging to words, fr. a speaking, speech, a way of speaking, a single word or phrase, fr. to say, to speak. See Legend.]
A vocabulary, or book containing an alphabetical arrangement of the words in a language or of a considerable number of them, with the definition of each; a dictionary; especially, a dictionary of the Greek, Hebrew, or Latin language.
<-- also, a dictionary for use in computational linguistics -->
© Webster 1913.