Source : Free On-Line Dictionary of Computing

Delphi Technique
     
         A group forecasting technique, generally
        used for future events such as technological developments,
        that uses estimates from experts and feedback summaries of
        these estimates for additional estimates by these experts
        until reasonable consensus occurs.  It has been used in
        various software cost-estimating activities, including
        estimation of factors influencing software costs.
     
        (1996-05-29)