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.
Solar flares are intense bursts of electromagnetic radiation from sunspots on the sun. Jamie Carter, Forbes, 12 Dec. 2024 That's what creates the sunspots that appear in telescope images as dark patches. Denise Chow, NBC News, 1 Dec. 2024 As a result, the plasma in sunspots gives off less light and appears dark in the visible light image. Margherita Bassi, Smithsonian Magazine, 21 Nov. 2024 Experts track increasing solar activity by counting how many sunspots appear on the sun’s surface. Ashley Strickland, CNN, 20 Nov. 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 21 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

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