geo-
a combining form meaning “the earth,” used in the formation of compound words.
geo-
1 American
Geo.
2
American
abbreviation
geo
1
British
/ ˈdʒiːəʊ /
noun
geo-
2
British
combining form
geo–
Scientific
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 gê, meaning “earth.” A synonym of gê 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 gê 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.
See Examples For:
Projecting advanced consciousness would be unreasonable and perhaps geo- or anthropocentric.
From Scientific American ● Dec. 15, 2019
When it comes to the geo-, each would be supported by a career diplomatic bureaucracy to develop policy options and talking points.
From BBC ● Nov. 23, 2016
Such technology, known as geo- fencing, relies on satellite navigation to pinpoint a drone’s location.
From Washington Post ● Aug. 20, 2015
“Aquino realizes China remains a very important geo- economic, geo-political partner,” said Ralf Emmers, a professor at the S. Rajaratnam School of International Studies in Singapore.
From BusinessWeek ● Aug. 17, 2011
But enough of these follies: ‘Necro-, pyro-, geo-, hydro-, cheiro-, coscinomancy, With other vain and superstitious sciences.’
From Witch, Warlock, and Magician Historical Sketches of Magic and Witchcraft in England and Scotland by W. H. Davenport (William Henry Davenport) Adams
Geo. photographer, what are you looking for in a picture?
From Forbes ● Feb. 1, 2015
In 1833 he was elected president of Randolph College, Macon, Geo., which position he held until elected President of the Wesleyan University.
From The International Monthly, Volume 4, No. 2, September, 1851 by Various
That rite was abolished by 4 Geo. iv. c.
From Russian Fairy Tales A Choice Collection of Muscovite Folk-lore by William Ralston Shedden Ralston
The Scotch sheriff is properly a judge, and by the statute 20, Geo., ii, c.
From History of Woman Suffrage, Volume III by Elizabeth Cady Stanton
Geo., first experiment at a railway, 278; characteristics, 279, 298, 455;contrasted with Lord Alvanley, 456.Sterling,
From Records of a Girlhood by Fanny Kemble
"We believe a rock-ice avalanche occurred in Nepal, blocking the Lhende river and causing the cascading flood event," Sarthak Shrestha, a remote sensing and geo information analyst with the intergovernmental institute, told AFP.
From Barron's ● Aug. 26, 2026
The StormWall payload mass is many times the mass of a typical geo satellite, and those already require the world’s most powerful rockets.
From The Wall Street Journal ● Jul. 10, 2026
In addition, we have done over 200 interviews, used satellite imagery, verification using geo locating, and consolidated data collected from U.N. agencies and other humanitarian organizations operating on the ground.
From Slate ● Dec. 8, 2024
The zoo has asked for any sightings to be reported to [email protected] with a photo and geo coordinates.
From BBC ● Oct. 24, 2024
Pirate was on guard," said Yaspard, "and would not have allowed him to quit the geo unless I had given a word of command.
From Viking Boys by Jessie Margaret Edmondston Saxby
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
