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thigmotropism Line breaks: thigmo|trop¦ism
Pronunciation: /ˌθɪɡmə(ʊ)ˈtrəʊpɪz(ə)m/

Definition of thigmotropism in English:


[mass noun] Biology
The turning or bending of a plant or other organism in response to a touch stimulus.
Example sentences
  • More recently, however, the Arabidopsis root movements were reinterpreted as the combined effect of essentially three processes, circumnuation, gravitropism and negative thigmotropism.
  • Negative thigmotropism is movement away from an object, such as a root away from a rock in the soil.
  • One of the most common examples of thigmotropism is seen in tendrils, which wrap around any object with which they come in contact.


Pronunciation: /ˌθɪɡmə(ʊ)ˈtrɒpɪk/ /ˌθɪɡmə(ʊ)ˈtrəʊpɪk/
Example sentences
  • In the absence of this force, the root pattern will depend only on the circumnutating movement, since the negative thigmotropic reaction, dependent on gravitropism, will also be excluded.
  • Clematis petioles are positively thigmotropic and its fun to make your own observations of this phenomenon.
  • Later experiments proved that the thigmotropic response is possibly the strongest tropic response in plants.


Early 20th century: from Greek thigma 'touch' + tropism.

Definition of thigmotropism in:
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