Terminology is a group of specialized words and respective meanings in a particular field, and also the study of such terms and their use;[1] the latter meaning is also known as terminology science. A term is a word, compound word, or multi-word expressions that in specific contexts is given specific meanings—these may deviate from the meanings the same words have in other contexts and in everyday language.[2] Terminology is a discipline that studies, among other things, the development of such terms and their interrelationships within a specialized domain. Terminology differs from lexicography, as it involves the study of concepts, conceptual systems and their labels (terms), whereas lexicography studies words and their meanings.
Terminology is a discipline that systematically studies the "labelling or designating of concepts" particular to one or more subject fields or domains of human activity. It does this through the research and analysis of terms in context for the purpose of documenting and promoting consistent usage. Terminology can be limited to one or more languages (for example, "multilingual terminology" and "bilingual terminology"), or may have an interdisciplinarity focus on the use of terms in different fields.
Ad hoc terminology is prevalent in the translation profession, where a translation for a specific term (or group of terms) is required quickly to solve a particular translation problem.
A terminologist intends to hone categorical organization by improving the accuracy and content of its terminology. Technical industries and standardization institutes compile their own glossaries. This provides the consistency needed in the various areas—fields and branches, movements and specialties—to work with core terminology to then offer material for the discipline's traditional and doctrinal literature.
Terminology is also then key in boundary-crossing problems, such as in language translation and social epistemology. Terminology helps to build bridges and to extend one area into another. Translators research the terminology of the languages they translate. Terminology is taught alongside translation in universities and translation schools. Large translation departments and translation bureaus have a Terminology section.
The main objects of terminological studies are special lexical units (or special lexemes), first of all terms. They are analysed from the point of view of their origin, formal structure, their meanings and also functional features. Terms are used to denote concepts, therefore terminology science also concerns itself with the formation and development of concepts, as well as with the principles of exposing the existing relations between concepts and classifying concepts; also, with the principles of defining concepts and appraising the existing definitions. Considering the fact that characteristics and functioning of term depend heavily on its lexical surrounding nowadays it is common to view as the main object of terminology science not separate terms, but rather the whole terminology used in some particular field of knowledge (also called subject field).