ˈleksəˌkän; -sə̇kən, -sēkən noun
( plural lexi·ca -_kə ; or lexicons )
Etymology: Late Greek lexikon, from neuter of lexikos of words, from Greek lexis word, speech (from legein to speak) + -ikos -ic — more at legend
1. : a book containing an alphabetical or other systematic arrangement of the words in a language or of a considerable number of them and their definitions : dictionary , wordbook
for the making of the great lexicon of the Greek language — Times Literary Supplement
2. : the vocabulary of a language, of an individual speaker, of a set of documents, of a body of speech, of a subject, or of an occupational or other group
in her financial lexicon , five cents was as valuable as five dollars — Calder Willingham
the realization that Marxism is not a complete lexicon of progress — New Republic
the missile … will become more and more important in the whole lexicon of war — H.W.Baldwin
3. : compendium , account , record
the lexicon of human struggle, through which she had searched to decipher a meaning, dissolved for her and floated away — Heln Howe
in the bright lexicon of LP, I know of no other pair of standard symphonies … so essentially satisfying — Irving Kolodin
4. : the total stock of morphemes in a language
linguistic classifications established on the basis of lexicon (as against those based on grammar) are more apt to prove right and to be demonstrable — N.A.McQuown