forerunner


forerunner (http://definr.com/forerunner)

     n 1: anything that precedes something similar in time;
          "phrenology was an antecedent of modern neuroscience"
          [syn: antecedent]
     2: a person who goes before or announces the coming of another
        [syn: precursor]
     3: an indication of the approach of something or someone [syn:
        harbinger, herald, precursor]