geo·​syn·​chro·​nous | \ ˌjē-ō-ˈsiŋ-krə-nəs How to pronounce geosynchronous (audio) , -ˈsin- \

Definition of geosynchronous

: being or having an orbit around the earth with a period equal to one sidereal day specifically : geostationary

Examples of geosynchronous in a Sentence

Recent Examples on the Web Expensive telecommunications satellites like Spaceway-1 orbit thousands of miles deeper into space in an area known as geosynchronous orbit. Jackie Wattles, CNN, "DirecTV rushes to dispose of satellite that might explode," 24 Jan. 2020 They're powered primarily by massive satellites in geosynchronous orbit, more than 20,000 miles from Earth. Jackie Wattles, CNN, "SpaceX wants to beam internet from space. This could be its biggest hurdle," 9 Dec. 2019 As opposed to a cable stretching skyward anchored from the Earth, the cable proposed in the study runs from the moon down toward our planet, coming to an end and hanging in Earth’s geosynchronous orbit, 22,236 miles above the surface. Fox News, "Space 'elevator' to the moon may soon be a reality," 14 Oct. 2019 But geosynchronous orbits can be more than 20 times farther away, making the stuff out there look both significantly smaller and significantly dimmer. Wired, "How America's Spooks Seek to Spy on Distant Satellites," 29 Aug. 2019 At such altitudes, satellites’ orbiting speed aligns with how fast the planet spins–so satellites remain over a fixed point, in what is called geosynchronous orbit. Jean Creighton, Quartz, "These innovations from the Moon landing changed life on Earth," 19 July 2019 Sure, space is huge, far larger than all the other spheres of warfare put together, even if one simply counts the distance from Earth to the geosynchronous satellites some 22,000 miles up. Michael O’hanlon, WSJ, "There’s No ‘Jungle Force.’ Who Needs a Space Force?," 27 June 2018 Large communications satellites of the sort SpaceX deals with are usually boosted into what are known as geosynchronous orbits, 35,786km above the equator. The Economist, "Is New Zealand the world’s best rocket-launching site?," 5 Apr. 2018 Their planet might be orbited by billions or trillions of geosynchronous satellites instead of our measly 400. NBC News, "Alien satellites might offer a new way to find E.T.," 19 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'geosynchronous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of geosynchronous

1968, in the meaning defined above

Keep scrolling for more

Learn More about geosynchronous

Time Traveler for geosynchronous

Time Traveler

The first known use of geosynchronous was in 1968

See more words from the same year

Statistics for geosynchronous

Last Updated

14 Feb 2020

Cite this Entry

“Geosynchronous.” Dictionary, Merriam-Webster, Accessed 26 Feb. 2020.

Comments on geosynchronous

What made you want to look up geosynchronous? Please tell us where you read or heard it (including the quote, if possible).


See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

More Confusing Words—Quiz

  • cats on impossible timber
  • The magician ______ moved the selected card to the top of the deck.
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!