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ge′o·tro′pic (jē′ə-trō′pĭk) adj.
(Botany) the response of a plant part to the stimulus of gravity. Plant stems, which grow upwards irrespective of the position in which they are placed, show negative geotropism
ge•ot•ro•pism(dʒiˈɒ trəˌpɪz əm)
oriented movement or growth of an organism with respect to the force of gravity.
The growth of an organism in response to gravity. The downward growth of plant roots is an example of geotropism.
geotropic (jē′ə-trō′pĭk, jē′ə-trŏp′ĭk) adjective
Botany. the response of a plant to the force of gravity. — geotropic, adj.See also: Gravity