Lamarckian[lə märk′ē ən]
Lamarckian definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
of Lamarck or Lamarckism
an adherent of Lamarckism
Lamarckian definition by American Heritage Dictionary
Of or relating to Lamarckism.noun
A supporter of Lamarckism.