sunspot

noun

sun·​spot ˈsən-ˌspät How to pronounce sunspot (audio)
: any of the dark spots that appear at times on the sun's surface and are usually visible only through a telescope

Examples of sunspot in a Sentence

Recent Examples on the Web
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The visible light image of the photosphere showcases sunspots, which resemble holes on the solar surface. Ashley Strickland, CNN, 20 Nov. 2024 This peak will result in more sunspots and coronal mass ejections, causing a shift in space weather that often causes aurora borealis to become more visible to more people. Ty Roush, Forbes, 5 Nov. 2024 Driving the news: Three of the eight sunspot regions currently visible — AR3774, AR3777 and AR3780 — have the potential to produce the kind of solar flares and coronal mass ejections (CMEs) that can extend the northern lights far beyond the usual perimeters. Christine Clarridge, Axios, 8 Aug. 2024 Because a large sunspot region is facing Earth, there is the chance for more CMEs this week. Jason Samenow, Washington Post, 29 July 2024 See all Example Sentences for sunspot 

Word History

First Known Use

1676, in the meaning defined above

Time Traveler
The first known use of sunspot was in 1676

Dictionary Entries Near sunspot

Cite this Entry

“Sunspot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sunspot. Accessed 1 Dec. 2024.

Kids Definition

sunspot

noun
sun·​spot -ˌspät How to pronounce sunspot (audio)
: one of the dark spots that appear from time to time on the sun's surface and are usually visible only through a telescope

More from Merriam-Webster on sunspot

Last Updated: - Updated example sentences
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