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
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.
However, the frequency of sunspots, solar flares and coronal mass ejections is not constant. Ryan French, Space.com, 27 Mar. 2025 The charter captain and Below Deck Down Under star recently spoke to PEOPLE about being diagnosed with melanoma in December after noticing changes in a sunspot on his left side. Vanessa Etienne, People.com, 3 Feb. 2025 The spectacle was caused by the most powerful geomagnetic storm in two decades, which erupted from a sunspot cluster on the sun. Christopher Cann, USA TODAY, 28 Dec. 2024 The intense solar flare originated from sunspot region AR4046 and was accompanied by a spectacular filament eruption and coronal mass ejection (CME) — an expulsion of plasma and magnetic field from the sun. Daisy Dobrijevic, Space.com, 28 Mar. 2025 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

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Cite this Entry

“Sunspot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sunspot. Accessed 14 Apr. 2025.

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

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