geosynchronous

adjective

geo·​syn·​chro·​nous ˌjē-ō-ˈsiŋ-krə-nəs How to pronounce geosynchronous (audio)
-ˈsin-
: 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
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The first-stage booster made a successful 21st liftoff, but was expended to get the satellite to a geosynchronous transfer orbit. Richard Tribou, The Orlando Sentinel, 14 Apr. 2026 High-Earth orbit is considered to be greater than 36,000 km from the Earth’s surface, above geosynchronous orbit. Eric Berger, ArsTechnica, 8 Apr. 2026 Article continues below The Falcon 9's upper stage, meanwhile, continued carrying EchoStar XXV to distant geosynchronous transfer orbit, where the satellite was deployed on schedule 35 minutes after liftoff. Mike Wall, Space.com, 10 Mar. 2026 Built on behalf of Space Force, the technology is designed to help detect disturbances to space systems in a geosynchronous orbit, which matches Earth's 24-hour rotation. Eric Lagatta, USA Today, 27 Feb. 2026 See All Example Sentences for geosynchronous

Word History

First Known Use

1968, in the meaning defined above

Time Traveler
The first known use of geosynchronous was in 1968

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Cite this Entry

“Geosynchronous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/geosynchronous. Accessed 16 Apr. 2026.

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