Functions of an integrated type learner's dictionary in professionally oriented teaching of Russian as a foreign language in a non-linguistic university

The aim of this research is to systematize the functions of learner's dictionaries in the aspect of teaching foreign students a specialized sublanguage, based on the linguo-methodological conditions for using such dictionaries, and to identify options for implementing these functions in lexicographical products of an integrated type. The article defines the concept of an "integrated learner's dictionary" for specialized sublanguages. Within interdisciplinary and anthropocentric frameworks, it describes optimal usage conditions, reviews existing theories on learner's dictionary functions, and proposes ways to implement these functions. The sublanguage of economics serves as a case study, using the "International Economic Relations" dictionary project, complete with accompanying exercises, as an example. The scientific novelty of the research lies in developing the concept of an integrated type learner's dictionary for a specialized sublanguage and clarifying options for implementing the normative, reference, systematizing, and educational functions of works of educational lexicography. The research concludes that the described dictionaries are polyfunctional in nature, with a predominance of the educational function, and have broad potential in professionally oriented teaching of Russian as a foreign language to non-native speakers.