noun. Red is an adjective to describe this ball. Red is an adjective to describe this ball. The definition of an adjective is a part of speech that is used to describe a noun. Red, tall, better and fast are all examples of adjectives.
Geo is defined as related to the Earth. An example of geo is geophone which is a device that detects seismic activity beneath the earth's surface. 1  earth, of the earth: geocentric, geophyte.  geographical: geopolitics.
geo - Computer Definition. At a position approximately 22,235 statute miles (35,784 km) above the equator, a satellite in orbit is in synchronization with the revolution of the earth. In other words, the satellite rotates around the earth at the same speed as the Earth rotates on its axis.