geotaxis

noun
geo·tax·is | \ˌjē-ō-ˈtak-səs \

Definition of geotaxis 

: a taxis in which the force of gravity is the directive factor

First Known Use of geotaxis

1899, in the meaning defined above

History and Etymology for geotaxis

New Latin

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The first known use of geotaxis was in 1899

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geotaxis

noun
geo·tax·is | \-ˈtak-səs \
plural geotaxes\-ˌsēz \

Medical Definition of geotaxis 

: a taxis in which the force of gravity is the directive factor

More from Merriam-Webster on geotaxis

Britannica.com: Encyclopedia article about geotaxis

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