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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Because most tracking systems are designed for keeping tabs on satellites and spacecraft operating from low Earth orbit to geosynchronous orbit (GEO), there is a gap in the United States' ability to detect and track objects much farther away, especially near the moon. Brett Tingley, Space.com, 13 Nov. 2025 New Glenn is more than 320 feet tall, partially reusable and capable of delivering payloads to low, medium and geosynchronous orbits. Matthew Glasser, ABC News, 8 Nov. 2025 Per their agreement, the company’s APS-R spacecraft will launch in the summer of 2026 to geosynchronous orbit, rendezvous with a Space Force satellite, and refuel it. Matthew S Williams, Interesting Engineering, 26 Sep. 2025 Commercial and military-owned geosynchronous satellites typically spend years in the same location, or slot, to provide communications services to users. Benj Edwards, ArsTechnica, 25 Sep. 2025 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 25 Nov. 2025.

Last Updated: - Updated example sentences
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