geo-, ge- +

In meteorology, the balance between the "Coriolis force" and the horizontal pressure gradient that determines the first-order circulation patterns of the open ocean: The condition of geostrophy can be exemplified by the Coriolis force that is an apparent force exerted on a moving object by the rotation of the Earth. This object moves horizontally above the Earth's surface in the Northern Hemisphere and tends to show a rightward deflection, and one in the Southern Hemisphere tends to show a leftward deflection.

The situation of geostrophy was described by Gaspard de Coriolis (1792-1843) who was a French civil engineer.

A reference to a satellite which has an orbit which appears to be fixed in a position related to the Earth: A geosynchronistic spacecraft does not necessarily lie in the Earth's equatorial plane as it is when it is "geostationary".

Referring to any equatorial satellite with an orbital velocity equal to the rotational velocity of the Earth resulting in a satellite that is apparently motionless for any observer on the Earth: A geosynchronous satellite has an orbit similar to a geostationary one, except that it does not necessarily lie in the Earth's equatorial plane.

An extensive, basin-shaped, mobile downward subsidence of the Earth's crust: A geosyncline is caused by the deposition of a considerable thicknesses of sedimentary and volcanic rocks over millions of years.

Referring to the movement of a motile organism using the Earth's gravity for orientation: Geotactic locomotion of a life form orients itself by the force of gravity.

A locomotor movement by an animal in response to a gravitational stimulus: Geotaxis is a directed response of a motile (moving) organism towards (positive) or away from (negative) the direction of gravity-

Geotaxis can be a movement of a motile micro-organism or cell in response to the force of gravity.

A part of civil engineering pertaining to increasing the habitability of the Earth: Geotechnics is the art of modifying and adapting the physical nature of the Earth to the needs of humans.

Geotechnics can also be explained as the application of scientific methods and engineering principles to civil engineering problems through acquiring, interpreting, and using knowledge of materials of the crust of the Earth.

The application of scientific methods and engineering techniques to the exploitation and utilization of natural resources: The scientists involved in geotechnology explored ways and means of using mineral resources, like soil, oil, and gas, for improving the living conditions in poor countries.

Of or relating to the shape, structure, and arrangement of rock masses: Geotectonic pressure causes structural deformation of the Earth's crust, particularly of the formation and movement of tectonic plates.

Descriptive of how the rock masses of the Earth are formed: Geotectonically shaped blocks and lumps of rocks of the Earth are created by the deformation of its surface.

Relating to the large-scale structure of the planet Earth's crust; structural geology: In Jim's studies in geology, he took a class in geotectonics and learned a lot about the creation and action of its tectonic plates.

Relating to, or caused by, the internal heat of the Earth: Mr. Thompson's house was warmed up by geothermal energy.

While at the hot springs, Jill let her feet dangle in the water and enjoyed the geothermal warmth it provided.

The use of geothermic heat in farming: Geothermal agriculture is the use of low-temperature geothermal water to warm irrigation water or to sterilize soil.

The use of geothermal heat in fish farming: Geothermal aquaculture is used to warm up the water in order to provide a controlled environment for the husbandry of marine organisms.

The use of naturally-cooler water, or air, to lower the temperature of a building, as opposed to air or water that is artificially cooled: Those who utilize heat pumps in a system of geothermal cooling save up to 70% on heating expenses in addition to 50% on cooling costs.