This paper aims to highlight the conceptual diversity around the concept
of lexicon as regarded by several authors while analyzing the changes that were
operated in the language sciences in order to allow for the lexical domain to acquire
primordial importance. Arising from research in the various disciplines of contemporary
linguistics, the collection of several lexical items and its relationship with grammar is
proposed. A description of the lexicon as a domain of interface will be undertaken in the
following, showing that the description of the lexical universe requires the knowledge of other disciplines. The methodology that will be followed is indicated for the review
of literature produced either in foreign languages or in Portuguese.
