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geotaxis

American

[jee-oh-tak-sis] / ˌdʒi oʊˈtæk sɪs /

noun

Biology.

oriented movement of a motile organism toward or away from a gravitational force.

geotaxis British

/ ˌdʒiːəʊˈtæksɪs /

noun

movement of an organism in response to the stimulus of gravity

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

geotactic

adjective
geotactically

adverb

Etymology

Origin of geotaxis

First recorded in 1960–65; geo- + -taxis

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023