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

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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.
The extrasolar planet, or exoplanet, under the watchful infrared eye of the JWST, is WASP-17b, located around 1,300 light-years away. — Robert Lea, Space.com, 16 Oct. 2026 If there is indeed an exoplanet circling TIC 4206066, Rabtsevich may not actually be the first to have seen it. — Adam Kovac, Scientific American, 14 Oct. 2026 While the mission was designed with dark energy, dark matter, and exoplanets in mind. — Richard Tribou, The Orlando Sentinel, 13 Oct. 2026 Cosmic death The unnamed exoplanet was discovered circling the white dwarf HS 0209+0832, according to a study published in the journal Nature Astronomy. — Devika Rao, TheWeek, 9 Oct. 2026 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

Rhymes for exoplanet

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Browse Nearby Words

exophthalmos
exoplanet
exoplasm
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Cite this Entry

“Exoplanet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exoplanet. Accessed 20 Oct. 2026.

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