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hydrotropism

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

noun

Biology.

  1. oriented growth in response to water.

hydrotropism British  
/ ˌhaɪdrəʊˈtrɒpɪk, haɪˈdrɒtrəˌpɪzəm /

noun

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

"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
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.

Other Word Forms

  • hydrotropic adjective
  • hydrotropically adverb

Etymology

Origin of hydrotropism

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.