[hahy-druh-trop-ik, -troh-pik]

Origin of hydrotropic

First recorded in 1915–20; hydro-1 + -tropic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

hydrotropic in Science


  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.
Related formshydrotropic adjective (hī′drə-trōpĭk, hī′drə-trŏpĭk)
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.