Abstract: The idea of reconstruction of cognitive structures on the basis of exterior language form is basic in the modern cognitive approach to the language. The aim of the study is to determine the structural features and contents of the concept STRENGTH in the modern English language on the basis of linguistic means of its representation. The methods of definition analysis, contextual analysis and cognitive interpretation were used during the research. The researchers describe some peculiarities of the encyclopaedia field which has a segmental organization and is presented as a set of conceptual signs. One of the segments “Social power” is examined in the study. This segment is actualized by six conceptual features and is the most volumetric component part of the encyclopaedia field of the concept STRENGTH. The concept under consideration is a multicomponent formation with a complicated structure including the core (image component and encyclopaedia field) and the periphery (interpretation field). Nevertheless, a structure and inner organization of a concept is a hypothetic model even if experimental methods of research and verification were used because any concept belongs to the mind and a researcher builds a concept on the basis of some indirect signs of its manifestation.