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
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But in a new study published Wednesday in the journal Nature, astronomers describe the first time the JWST has captured a photo of an exoplanet. Margherita Bassi, Smithsonian Magazine, 27 June 2025 The search for exoplanets is one of the most important goals of astronomers in the 21st century. Stephanie Edwards, Discover Magazine, 25 June 2025 The first discovery of an exoplanet orbiting a star was made in 1995, the researchers said. Julia Jacobo, ABC News, 18 June 2025 Designed to search for new exoplanets and life itself, its observational power will far exceed that of the Hubble and Webb telescopes. Eric Reicin, Forbes.com, 12 June 2025 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

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Cite this Entry

“Exoplanet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exoplanet. Accessed 12 Jul. 2025.

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