sublanguage

noun

sub·​lan·​guage ˌsəb-ˈlaŋ-gwij 

-wij

variants or sub-language

plural sublanguages or sub-languages

: 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

Word History

First Known Use

1940, in the meaning defined above