Introduction. Transdisciplinarity can be reinterpreted from a scientific and philosophical category to a socio-philosophical one by referring to the theoretical constructions of social consensus. In this case, its general social functions are emphasized, which are the social and communication effect of transdisciplinary interactions between science and society. Theoretical analysis. The socio-philosophical analysis of transdisciplinarity is formed in the field of categories of sociality, time, object, truth and values. They are revealed in the autopoietic analysis of the society made by N. Luhmann, which continues the Weberian traditions in relation to the study of scientific rationality. Linking the logical, axiological and social plans of the formation of truth into a single whole in the dialogue between science and society is actualized in the real context of social time. The growth of scientific specialization, which breaks the unified image of science, determines the axiologization and ethicization of scientific knowledge. Transdisciplinarity, based on the social recognition of specific scientific knowledge in everyday life, becomes a tool for gathering disparate academic groups into a symbolic social subject of science. Conclusion. Transdisciplinary science as a hybrid social subject is capable of autonomous communicative behavior, which allows it to act as an agent of policy related to the application of scientific knowledge and thereby legitimize its claims to social authority.