The main topic of this paper deals with a general description of the notion of the class of objects, its historical draft and development in linguistic studies (generative grammar of N. Chomsky, semantic markers in the theory of J.J. Katz, J.A. Fodor, the predicate-argument structure of S. Karolak and the electronic dictionary of G. Gross). The author takes advantage of this concept in her analysis basing on object-oriented approach and the disambiguation by W. Banyś. This article demonstrates also that the disambiguation of the meaning of polysemic word pass by a correct choise of a class of objects which is the only solution to provide adequate equivalents in the target language and the condition of the effective and satisfying translation supported by computer.