Geodesy: the definition, pronunciation, information and more. Definition The classical definition of geodesy [pronunciation: jee-od-uh-see] is that it is the science concerned with the shape, size, and the gravity field of the Earth. However, geodesy today is much more than that. Nowadays, it is a geoscience that deals with: monitoring the solid Earth (displacement, subsidence or deformation of the ground and structures due to tectonic, volcanic and other natural phenomena as well as human activity); monitoring variations in the liquid Earth (sea-level rise, ice sheets, mesoscale surface topography features, mass transport); monitoring variations in the Earth's rotation (polar motion, the length of the day); monitoring the atmosphere...
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