hydrotropism hy·drot·ro·pism (hī-drŏt'rə-pĭz'əm)
Growth or movement in a sessile organism toward or away from water.
|hydrotropism (hī-drŏt'rə-pĭz'əm) Pronunciation Key
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.
hydrotropic adjective (hī'drə-trō'pĭk, hī'drə-trŏp'ĭk)