sunspot

noun sun·spot \ ˈsən-ˌspät \
|Updated on: 5 Jul 2018

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

Recent Examples of sunspot from the Web

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First Known Use of sunspot

1676

in the meaning defined above

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SUNSPOT Defined for English Language Learners

sunspot

Definition of sunspot for English Language Learners

  • astronomy : a dark spot that sometimes appears on the surface of the sun



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