The article provides a systemic analysis of Kayum Nasyri’s contribution to the historical and linguistic evolution of the Tatar literary language in the second half of the 19 th century, focusing on its importance in the processes of lexical normalization and semantic expansion of Tatar vocabulary, including the formation and transformation of the terminological fund of the Tatar language in this period. The study revealed that Kayum Nasyri’s lexicographic publications played a multidimensional role that went beyond the traditional functions of reference and information resources. They functioned as comprehensive educational and methodological tools designed to systematize and facilitate the assimilation of Russian-language scientific terminology in a Tatar-speaking communicative and educational environment. These publications contributed not only to the lexical adaptation of terms, but also to their semantic transformation in accordance with the cultural and linguistic norms of the Tatar language. K. Nasyri’s dictionaries are considered to be important means of cognitive and linguistic integration, playing a key role in the process of linguistic modernism and the formation of Tatar-language scientific discourse. Special attention in the study is paid to the importance of Kayum Nasyri’s lexicographic works as a key factor in the transformation and standardization of the literary Tatar language norms. The article highlights their role in the formation of stable linguistic norms that contribute to the unification and systematization of the lexical and terminological composition of the language. In addition, we reveal the importance of these publications in the process of consolidating Tatar national culture, which acts as a dynamic system integrating both traditional linguistic and cultural practices and innovative linguistic processes. Thus, lexicographic monuments are considered to be an organizational tool that ensures the interaction of historical and cultural heritage with modern trends in the linguistic development and cultural identity.