Metalinguistics - in Linguistics

In Linguistics

Linguists use this term to designate activities associated with metalanguage, a language composed of the entirety of words forming linguistic terminology (for example, syntax, semantics, phoneme, lexeme... as well as terms in more current usage, such as word, sentence, letter, etc.) Metalinguistics is used to refer to the language, whether natural or formalized (as in logic), which is itself used to speak of language; to a language whose sole function is to describe a language. The language itself must constitute the sole sphere of application for the entire vocabulary.1

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