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hydrotaxis

[hahy-druh-tak-sis]
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noun Biology.
  1. oriented movement toward or away from water.
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Origin of hydrotaxis

First recorded in 1895–1900; hydro-1 + -taxis
Related formshy·dro·tac·tic [hahy-druh-tak-tik] /ˌhaɪ drəˈtæk tɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for hydrotaxis

hydrotaxis

noun
  1. the directional movement of an organism or cell in response to the stimulus of water
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Derived Formshydrotactic, adjective
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
hydrotaxis in Medicine

hydrotaxis

(hī′drə-tăk′sĭs)
n.
  1. Movement of a cell or an organism in response to moisture.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.