exoplanet

noun

exo·​plan·​et ˈek-sō-ˌpla-nət How to pronounce exoplanet (audio)
ˌek-sō-ˈpla-
: a planet orbiting a star that is not our sun

Examples of exoplanet 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.
In contrast, many of the stars hosting exoplanets are too faint to be seen with the naked eye, which marks out HD 20794 as something special. Keith Cooper, Space.com, 28 Jan. 2025 But those powerful gales are nothing compared to the supersonic winds that astronomers have just discovered on the giant exoplanet WASP-127b. Margherita Bassi, Smithsonian Magazine, 23 Jan. 2025 The exoplanet’s winds blow 18 times faster than those on Neptune, which has the strongest winds ever measured in the Solar System. Paul Smaglik, Discover Magazine, 22 Jan. 2025 Astronomers have discovered an exoplanet with a tail, like a gigantic comet. New Atlas, 21 Dec. 2024 See all Example Sentences for exoplanet 

Word History

First Known Use

1992, in the meaning defined above

Time Traveler
The first known use of exoplanet was in 1992

Dictionary Entries Near exoplanet

Cite this Entry

“Exoplanet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exoplanet. Accessed 2 Feb. 2025.

More from Merriam-Webster on exoplanet

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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