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thigmotropism

Syllabification: thig·mot·ro·pism
Pronunciation: /THiɡˈmätrəˌpizəm
 
/

Definition of thigmotropism in English:

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.

Origin

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

Derivatives

thigmotropic

1
Pronunciation: /ˌTHiɡməˈtrōpik, -ˈträpik/
adjective
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.

Definition of thigmotropism in:

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