Wiktionary
n. short alphabetic or numeric identifier assigned to a language.
Wikipedia
A language code is a code that assigns letters or numbers as identifiers or classifiers for languages. These codes may be used to organize library collections or presentations of data, to choose the correct localizations and translations in computing, and as a shorthand designation for longer forms of language-name.
Usage examples of "language code".
I've approached it as an arithmetic problem, as an astronomic or astro-logic system, as a foreign language code.
The original Fluxgirl spell Coydt had forced upon her, in fact, had been in machine-language code, far too complex for her to really followor anyone else.
The original Fluxgirl spell Coydt had forced upon her, in fact, had been in machine-language code, far too complex for her to really follow—.
Do you remember the name of the man who finally cracked the Qanskan language code?