The scientific terminology has a leading role in the information’s structuring, being a project of investigation from the multidisciplinary or encyclopedic perspective, which has as object the theoretical and practical study of complex terms, of specialized concepts, of their significance and applications. The encyclopedia’s terminology is as a quadruplet composed from the terminological base, the conceptual structure, the ensemble of represented objects, processes and phenomena and the ensemble of the relations between the first three levels. The Elaboration of the general Registry of the Encyclopedia of Moldova’s terms has the following stages: the documentation, the delimitation of the science’s domains, the elaboration of the national Trees, the selection of terms, the organization of the terminological base, the review, the correction of the errors and the validation of the terms.