Debates on the subject of terminology outline two positions. For some theorists, the subject of terminology is the concept represented as a universal entity of upper limit, the term is only a label to denote the concept. For others, the central subject is the term, considered a unit equipped with both form and content. This paper is a synthesis of the two positions, based on the most relevant researches in the field. The term is not isolated from its linguistic or extralinguistic context (field), also being the fundamental unit of specialized language – the suitable language for use in any sphere of human activity.