researcher

from WordNet (r) 3.0 (2006)

researcher
    n 1: a scientist who devotes himself to doing research [syn:
         {research worker}, {researcher}, {investigator}]

from The Collaborative International Dictionary of English v.0.48

Researcher \Re*search"er\ (-[~e]r), n.
   One who conducts research. In the field of scientific
   research, also called an {investigator} or {scientist}.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

20 Moby Thesaurus words for "researcher":
      analyst, analyzer, assayer, delver, digger, essayer, experimenter,
      hunter, perquisitor, ransacker, research worker, researchist,
      rummager, searcher, seeker, test driver, test pilot, tester,
      tryer-out, zetetic

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