/ˌdʒiːə(ʊ)ˈtaksiːz/, U.S. /ˌdʒioʊˈtæksiz/.geotaxisn.
/ˌdʒiːə(ʊ)ˈtaksɪs/, /dʒɪəˈtaksɪs/, U.S. /ˌdʒioʊˈtæksəs//ˌdʒiːə(ʊ)ˈtaksiːz/, U.S. /ˌdʒioʊˈtæksiz/. Biology.
The orientated movement of a motile organism in response to gravity; an instance of this.
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the world > life > biology > biological processes > movement > movement in response to stimuli > [noun] > in response to other stimuli
rheotropism1884
aerotaxis1895
geotaxis1897
rheotaxis1897
anemotropism1899
electrotaxis1899
anemotaxis1903
mechanosensitivity1969
1897 C. B. Davenport Exper. Morphol. I. 116 Closely allied species may have geotaxis of opposite sense.
1901 Proc. Amer. Acad. Arts & Sci. 37 187 Certain individuals appeared to have a fairly marked positive geotaxis, for, when placed on an inclined glass plate, such animals swung the head-pole of the axis toward the earth.
1962 New Scientist 6 Dec. 545/2 Common observation indicates that moths fly towards a light (‘positive phototaxis’) and flies climb up a window pane (‘negative geotaxis’).
1983 Science 13 May 731/1 Responses to the perception of geographic up and down, generally referred to as geotaxes, are commonly reported behaviors among planktonic marine invertebrate larvae.
2003 F. E. Goodson Evol. & Function of Cognition viii. 260 When the snail is upside down and underwater, the phototaxis becomes reversed, but not the geotaxis; that is, the snail now moves toward light.
This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022).
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n.1897- to bust in on
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