geotropism
dʒiːɒˈtrɒpɪzəm
Definitions
1. noun
A biological phenomenon in which plants or organisms grow in response to the gravitational pull of the Earth, resulting in roots growing downward and shoots growing upward.
“The geotropism of the seedling helped it grow its roots deep into the soil.”
2. noun
A growth response to the force of gravity, as in the orientation of plant organs or the distribution of muscle tissue.
“The scientists studied the geotropism of the plant cells to understand their growth patterns.”