Noun
a language that is to be translated into another language
Source: WordNetsource-language
Known as EDSAC 2 Autocode, it was a straight development from Mercury Autocode adapted for local circumstances, and was noted for its object code optimisation and source-language diagnostics which were advanced for the time. Source: Internet
Natural morphemes of languages in this group are rarely altered greatly from their source-language form, but compound and derived words are generally not recognizable at sight by people familiar with the source languages. Source: Internet