[thig-mo-truh-piz-uh m]
noun Biology.
  1. oriented growth of an organism in response to mechanical contact, as a plant tendril coiling around a string support.

Origin of thigmotropism

1895–1900; < Greek thígm(a) touch + -o- + -tropism
Related formsthig·mo·trop·ic [thig-muh-trop-ik, -troh-pik] /ˌθɪg məˈtrɒp ɪk, -ˈtroʊ pɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for thigmotropism


  1. the directional growth of a plant, in response to the stimulus of direct contactAlso called: haptotropism, stereotropism
Derived Formsthigmotropic, adjective

Word Origin for thigmotropism

C19: from Greek thigma touch + -tropism
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for thigmotropism

1900, from thigmo-, comb. form meaning "touch," from Greek thigma "touch" + tropism.

Online Etymology Dictionary, © 2010 Douglas Harper

thigmotropism in Medicine


  1. The turning or bending response of an organism or part of an organism upon direct contact with a solid surface or object.stereotropism
Related formsthig′mo•tropic (thĭg′mə-trŏpĭk, -trōpĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.