Meaning of thigmotropism

thig•mot•ro•pism

Pronunciation: (thig-mo'tru-piz"um), [key]
— n. Biol.
  1. oriented growth of an organism in response to mechanical contact, as a plant tendril coiling around a string support.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.