Geo

GEO or Geo may refer to any of the following:

In computational & scientific use:

• GEO (magazine), a popular scientific magazine
• GEO 600, a detector for gravitational radiation
• Global Environment Outlook, an environmental assessment produced by the United Nations
• Geo (microformat), a microformat for marking up geographical coordinates in (X)HTML
• Geo URI, an IETF proposed standard for making URIs for physical locations
• Gene Expression Omnibus, a National Center for Biotechnology Information database for gene expression
• Geostationary Earth orbit, another name for geostationary orbit, a geosynchronous orbit directly above the Earth's equator.

In commercial use:

• Geomarketing, a discipline within marketing analysis
• Geo TV, a leading television channel in Pakistan
• Geo (automobile), a defunct brand of entry-level cars produced by General Motors
• GEO Group, a prison corporation

People:

• Geo. is sometimes an abbreviation of the name George
• Geo Bogza, Romanian poet and essayist
• Geo Dumitrescu, Romanian poet
• Geo Stelar is the protagonist in Mega Man Star Force
• Christian Geo Heltboe, Danish comedian known by his middle name Geo
• Geo, a fictional character on the Nick Jr. television show, Team Umizoomi

As a group:

• Grupo Especial de Operaciones, a division of the Spanish police
• General Education Officer, the basic rank of teachers of the Ministry of Education in Singapore
• Group on Earth Observations, an intergovernmental organization

As a place:

• GEO, the IATA code for Cheddi Jagan International Airport
• Estadio Casas GEO, stadium in Mexicali, Mexico
• Geo (landscape), a creek (inlet) or gulley in the Orkney and Shetland Islands
• The IOC country code and three letter country code for  Georgia, a Eurasian country
• Geo City, a fictional city in the videogame Raw Danger

Prefix

As a prefix: geo- is taken from the Greek word γη or γαια meaning "earth", usually in the sense of "ground or land". Geo- is thus a prefix for many words dealing in some way with the earth, including:

• Geography, the study of the spatial characteristics of human and natural features on Earth as well as human-environment relationships
  • Geology, the study of the Earth's structure
  • Geotechnics, the application of scientific methods and engineering principles to the acquisition, interpretation, and use of knowledge of soil for engineering
  • Geopolitics, the analysis of history, geography and social science with respect to international politics
  • Geodesy, also known as geodetics, the study of the measurement and representation of the earth
• Geometer moth, the larvae of which appear to "measure the earth" as they move in a looping fashion
• Geometry, the mathematics of Earth measurement
  • Geocentric, a model of the universe that places the earth at its centre
    • Geostationary orbit, a circular orbit directly above the Earth's equator
    • Geosynchronous orbit, an orbit that has the same period as the Earth's sidereal rotation
• Geothermal (geology), heat sources from within the Earth
  • Geo-exchange, a heating and cooling system
• Geocaching, an outdoor activity that involves using navigational techniques to find geocaches
• Geocoding or GeoTagging, encoding coordinates into features, images, web pages and other data records
  • Geolocation, the science of determining the real-world location of a website or website visitor