Dictionary.com
Thesaurus.com

geo-

1 American  
  1. a combining form meaning “the earth,” used in the formation of compound words.

    geochemistry.


Geo. 2 American  

abbreviation

  1. George.


geo 1 British  
/ ˈdʒiːəʊ /

noun

  1. (esp in Shetland) a small fjord or gully

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

geo- 2 British  

combining form

  1. indicating earth

    geomorphology

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

geo– Scientific  
  1. A prefix that means “earth,” as in geochemistry, the study of the Earth's chemistry.


Usage

What does geo- mean? Geo- is a combining form used like a prefix meaning “earth.” It is often used in scientific terms in a variety of fields. In some rare instances, such as the term geocode, geo- is used as an abbreviation of geographical.Geo- comes from Greek , meaning “earth.” A synonym of is khthṓn, which is the source of several words related to the underworld, such as chthonic.What are variants of geo-?When combined with words or word elements that begin with a vowel, geo- becomes ge-, as in geanticline. Want to know more? Read our Words That Use article for ge-.

Etymology

Origin of geo-

< Greek geō-, combining form of the earth

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The report noted that the Oakland-based healthcare system’s corporate pension, Kaiser Permanente Group Trust, holds assets in CoreCivic and the GEO Group, the two largest for-profit prison corporations in the U.S.

From Los Angeles Times

"We identified 90 rules that can make sure the content you create is valued by AI and spread to the right places," said Joan Burkovic, head of French GEO startup GetMint.

From Barron's

It also provides broadband GEO service to 1,343 aircraft, a 14% year-over-year increase.

From MarketWatch

The company offers connectivity using both LEO and GEO satellites, as well as a 5G air-to-ground network for customers traveling in North America.

From MarketWatch

ViaSat also uses GEO satellites, which cover much more of the Earth’s surface than LEO satellites — at the cost of generally slower speeds and higher latency.

From MarketWatch