source language

The definition of a source language is the language that is to be translated.

(noun)

An example of a source language is Spanish when it needs to be translated into Italian.

See source language in Webster's New World College Dictionary

the language from which a text is to be translated into another language: compare target language (sense )
Comput. the language, as COBOL or FORTRAN, in which a program is originally written

See source language in American Heritage Dictionary 4

noun

The language from which a translation is to be made or from which a word is borrowed.

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source language computer definition

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