geotropism Hear it!

geotropism definition

ge·ot·ro·pism (jē ä′trə piz′əm)

noun

any positive (or negative) movement or growth of a plant or sessile animal in response to (or against) the force of gravity

Etymology: geo- + -tropism

Related Forms:

  • geotropic ge′·o·trop′ic (jē′ō träp′ik) adjective

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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