sublanguage

noun
sub·​lan·​guage | \ˌsəb-ˈlaŋ-gwij, -wij\
variants: or sub-language
plural sublanguages or sub-languages

Definition of sublanguage 

: a subvariety of a language especially : the dialect or jargon spoken by a particular group Sublanguage is a variety of language used in a particular field or by a particular professional group and characterized especially by distinctive vocabulary. — Marina I. Solnyshkina Examples of sublanguage include computer jargon and medical terminology … Encyclopedia of Library and Information Science Jargon starts out as a simple technical sublanguage: users devise abbreviations and acronyms that help speed up processes. It also helps reinforce group solidarity … — Baden Eunson

First Known Use of sublanguage

1940, in the meaning defined above

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