ge·​ot·​ro·​pism | \ jē-ˈä-trə-ˌpi-zəm How to pronounce geotropism (audio) \

Definition of geotropism

: a tropism (as of plant roots or shoots) in which gravity is the orienting factor : gravitropism Exactly how roots perceive and transduce gravity has not yet been fully explained, which is surprising because root geotropism has been investigated for more than 100 years.— Lewis J. Feldman

First Known Use of geotropism

1873, in the meaning defined above

History and Etymology for geotropism

borrowed from German Geotropismus, from geo- geo- + -tropismus -tropism

Note: The term was introduced by the German botanist and plant physiologist Albert Bernhard Frank (1839-1900) in Beiträge zur Pflanzenphysiologie (Leipzig, 1868), p. 85.

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The first known use of geotropism was in 1873

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Cite this Entry

“Geotropism.” Dictionary, Merriam-Webster, Accessed 8 May. 2021.

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ge·​ot·​ro·​pism | \ jē-ˈä-trə-ˌpiz-əm How to pronounce geotropism (audio) \

Medical Definition of geotropism

: a tropism in which gravity is the orienting factor

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