Source : Free On-Line Dictionary of Computing

domain model
     
         1. A definition of the functions, objects,
        data, requirements, relationships and variations in a
        particular {domain}.
     
        2. A product of {domain analysis} which provides a
        representation of the requirements of the domain.  The domain
        model identifies and describes the structure of data, flow of
        information, functions, constraints and controls within the
        Domain that are included in software systems in the domain.
        The Domain Model describes commonalities and variabilities
        among requirements for software systems in the domain.
     
        (1997-12-26)