<p>The concept of equivalence has for many years attracted attention of researchers in variousdisciplines: from mathematics to philosophy to translation theory to terminology. This thesisintends to survey the concept of equivalence in three subject fields all of which focus onlanguages and communication, namely: translation theory, lexicography and terminology. Thepurpose of the paper is twofold: to investigate the theoretical grounds of equivalence in thesethree disciplines and to survey the methods and practices of establishing equivalence inmultilingual terminology work. The results of the theoretical investigation are summed up onthe basis of the terminological concept analysis. Four concepts systems are structured andpresented in the form of concept diagrams (two for translation theory, one for lexicography andone for terminology). The concept systems give an overview of the current understanding ofequivalence in the three subject fields and expose the relations between equivalence and anumber of related concepts. The central theoretical question of the thesis whether equivalencecould be considered the same concept in all three disciplines is answered on the basis of theresults of the terminological concept analysis. The empirical investigation is carried out in theform of case studies in the frame of multilingual terminology work. It focuses on the problemsof establishing equivalence, of determining the degree of equivalence as well as on the methodsand practices of presenting equivalents in various terminological resources.</p>

The concept of equivalence has for many years attracted attention of researchers in variousdisciplines: from mathematics to philosophy to translation theory to terminology. This thesisintends to survey the concept of equivalence in three subject fields all of which focus onlanguages and communication, namely: translation theory, lexicography and terminology. Thepurpose of the paper is twofold: to investigate the theoretical grounds of equivalence in thesethree disciplines and to survey the methods and practices of establishing equivalence inmultilingual terminology work. The results of the theoretical investigation are summed up onthe basis of the terminological concept analysis. Four concepts systems are structured andpresented in the form of concept diagrams (two for translation theory, one for lexicography andone for terminology). The concept systems give an overview of the current understanding ofequivalence in the three subject fields and expose the relations between equivalence and anumber of related concepts. The central theoretical question of the thesis whether equivalencecould be considered the same concept in all three disciplines is answered on the basis of theresults of the terminological concept analysis. The empirical investigation is carried out in theform of case studies in the frame of multilingual terminology work. It focuses on the problemsof establishing equivalence, of determining the degree of equivalence as well as on the methodsand practices of presenting equivalents in various terminological resources.