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
The science of sunspots is still murky, despite new supercomputer simulations and theories about their formation.
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First Known Use of sunspot
SUNSPOT Defined for English Language Learners
Definition of sunspot for English Language Learners
astronomy : a dark spot that sometimes appears on the surface of the sun
Seen and Heard
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