geotropic

[ jee-oh-trop-ik, -troh-pik ]

/ ˌdʒi oʊˈtrɒp ɪk, -ˈtroʊ pɪk /

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adjective Biology.

of, relating to, or exhibiting geotropism.

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Origin of geotropic

First recorded in 1870–75; geo- + -tropic

ge·o·trop·i·cal·ly, adverb

This has even led to assumption that there are phototropic particles which function like statoliths in geotropic organs.
Life Movements in Plants, Volume II, 1919|Sir Jagadis Chunder Bose
The recorder shown in figure 157 is very convenient for study of geotropic movement.
Life Movements in Plants, Volume II, 1919|Sir Jagadis Chunder Bose
Hence the fundamental reaction under geotropic stimulus is excitatory contraction as under other modes of stimulation.
Life Movements in Plants, Volume II, 1919|Sir Jagadis Chunder Bose
The exhibition of geotropic response by induced contraction of the excited upper side thus becomes greatly delayed.
Life Movements in Plants, Volume II, 1919|Sir Jagadis Chunder Bose

The geotropic movement is found increased as the directive angle is increased from zero to 90°.
Life Movements in Plants, Volume II, 1919|Sir Jagadis Chunder Bose