sun·​spot | \ ˈsən-ˌspät How to pronounce sunspot (audio) \

Definition of sunspot

: 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 The sunspot, named AR3055, measures more than 6,100 miles wide. Joshua Hawkins, BGR, 13 July 2022 Solar researchers spotted a massive sunspot pointed towards Earth. Joshua Hawkins, BGR, 13 July 2022 This provided us with proper images of the sunspot that erupted over the weekend. Joshua Hawkins, BGR, 28 June 2022 The average sunspot is the size of our planet, according to Newsweek. Sarah Raza, Detroit Free Press, 21 June 2022 The solar flare video showcases a growing sunspot known as AR3032. Joshua Hawkins, BGR, 20 June 2022 On Saturday evening, a solar flare released a coronal mass ejection from a sunspot called AR2936, which had been rapidly increasing in size in a two-day span, according to Jordan Mendoza, USA TODAY, 3 Feb. 2022 The Sun ejected filaments of plasma from an active sunspot, opening a massive canyon of fire. Joshua Hawkins, BGR, 6 Apr. 2022 The sunspot region that caused the coming storms is actually shifting to the back of the sun now. Brian K Sullivan,, 30 Mar. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sunspot.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of sunspot

1676, in the meaning defined above

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Time Traveler for sunspot

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The first known use of sunspot was in 1676

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Dictionary Entries Near sunspot

sun spider


sunspot cycle

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Statistics for sunspot

Last Updated

10 Aug 2022

Cite this Entry

“Sunspot.” Dictionary, Merriam-Webster, Accessed 13 Aug. 2022.

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More from Merriam-Webster on sunspot

Nglish: Translation of sunspot for Spanish Speakers Encyclopedia article about sunspot


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