apogeotropism[ap′ō jē ä′trə piz′əm, ap′ə-]
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
Bot. a tendency to grow or move away from the earth or from the pull of gravity; negative geotropism
Origin: apo- plush geotropism
Used by arrangement with John Wiley & Sons, Inc.