natural language used by a community of subject specialists in a particular field of knowledge, formalised and codified variety of language, used for special purposes with the function of communicating information of a specialist nature at any level in the most economic, precise and unambiguous , language used in a subject field and characterized by the use of specific linguistic means of expression, kirjakeele allkeel teaduse, kunsti, tehnika jm alade tarbeks, mingil erialal kasutatav keel, millele on omane spetsiifiliste keeleliste väljendusvahendite kasutamine, erialasel suhtlemisel kasutatav keel, kirjakeele osa, mida kasutatakse teaduses, kunstis ja muudel aladel