geotropism
geot·ro·pism
noun
Origin
From geo- (“earth”) + -tropism, due to growth towards or away from the earth.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.