hydrotropism

American  

[hahy-dro-truh-piz-uhm] / haɪˈdrɒ trəˌpɪz əm /

noun

Biology.

1. oriented growth in response to water.

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hydrotropism British  

/ haɪˈdrɒtrəˌpɪzəm /

noun

1. the directional growth of plants in response to the stimulus of water

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hydrotropism Scientific  

/ hī-drŏt′rə-pĭz′əm /

1. The growth or movement of a fixed organism, especially a plant, or a part of an organism toward or away from water. Roots often display hydrotropism in growing towards a water source.

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Other Word Forms

• hydrotropic
  adjective
• hydrotropically
  adverb

Etymology

Origin of hydrotropism

First recorded in 1880–85; hydro- ¹ + -tropism