geodynamics[jē′ō dī nam′iks]
the study of the activity and forces inside the earth
- (used with a sing. verb) The branch of dynamics that is concerned with the causes and effects of forces and motions involving the earth's interior, including rotation, plate tectonics, volcanic eruptions, and seismic modeling.
- (used with a pl. verb) The forces and motions involving the earth's interior.