Register Journal
The name of REGISTER JOURNAL was taken from the concept of REGISTER and it has clearly been described by Trudgill (1983:101) as follows:
Linguistic varieties that are linked ... to occupations, professions or topics have been termed registers. The register of law, for example, is different from the register of medicine, which in turn is different from the language of engineering---and so on. Registers are usually characterized solely by vocabulary differences; either by the use of particular words, or by the use of words in a particular sense. Registers are simply a rather special case of a particular kind of language being produced by the social situation.
Halliday, McIntosh and Strevens (1964) devote a long section to "REGISTER" in their 1964 work. They also refer to REGISTER as `distinguished by use.'