Propounding generative grammar, involves a broad range of changes, in its body from standard theory to minimalist program, in this case the amount of information which exist in different modules like lexicon, has been changed and the enhancement of different kinds of features in this modules causes deletion of complex transformational and grammatical processes. The present essay's main objective is to explore factors which have strong influence on Chomsky’s approach from auto syntax to lexica list theory and arguing the place of lexicon in minimalist program according to which the definition of lexicon in minimalist program will be prepared.
