Hydrotropism definitions

hī-drŏt'rə-pĭz'əm
Growth or movement in a sessile organism toward or away from water, as of the roots of a plant.
noun
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The positive, or negative, movement or growth, as of a plant root, toward, or away from, moisture.
noun
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Growth or movement in a sessile organism toward or away from water, as of the roots of a plant.
noun
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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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(biology) The movement of a plant (other organism) either towards or away from water.
noun
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Origin of hydrotropism

hydro- +‎ tropism