In this article, I try to define gerontolinguistics as a subdiscipline of linguistics, considered today as a kind of "novum". The language of old people is a very important area for research, especially for linguists, because there is little information in literature on this subject. Language is a social creation, a carrier of communication, and thus maintains social bonds. The culmination of this process is the formation of cultural heritage based on the experience of generations. The connection between the old people’s language and the borderline of linguistics (i.e. sociolinguistics) and (i.e. gerontology) reflects a close relation with the biological, social and cultural plane of research. In addition, there is an aspect of communication in gerontolinguistics, entering the closest relation with gerontologopedics, allows to consider gerontolinguistics in the triad of language-age-communication.