"growth downward," 1874, from geo- "earth" + -trope "a turn, direction" (from PIE root *trep- "to turn"), translating German Geotropismus (1868), which was coined in 1868 by German botanist Albert Bernhard Frank. Related: Geotropic.
Georgian
georgic
geosphere
geosyncline
geothermal
geotropism
*ger-
Gerald
Geraldine
geranium
Gerard
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