Terminological foundations are the conceptual, linguistic, and methodological principles that establish terminology as the systematic study and management of specialized concepts and their designations ^[1]. They distinguish a concept, understood as a unit of knowledge formed through abstraction, from a term, understood as a verbal designation assigned to that concept within a specialized domain ^[2]. These foundations also examine the relations among concepts, the formation and use of terms, the role of definitions, and the influence of disciplinary, communicative, and cultural contexts on specialized language ^[1][3]. Classical terminology emphasized the systematic organization and standardization of concepts and terms, whereas contemporary approaches additionally recognize variation, multidimensionality, discourse, and the situated nature of terminological knowledge ^[3]. Terminological foundations therefore provide the theoretical basis for terminology research, terminography, terminology planning, and computational terminology management.