Source : WordNet®

source code
     n : program instructions written as an ASCII text file; must be
         translated by a compiler or interpreter or assembler into
         the object code for a particular computer before
         execution

Source : Free On-Line Dictionary of Computing

source code
     
         (Or "source", or rarely "source
        language") The form in which a computer program is written by
        the programmer.  Source code is written in some formal
        programming language which can be compiled automatically into
        {object code} or {machine code} or executed by an
        {interpreter}.
     
        (1995-01-05)