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/ˈsʌnspɒt/ · noun
(astronomy) A region on the sun's surface with a lower temperature than its surroundings and intense magnetic activity..
Use sun spot when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Sun spot means (astronomy) A region on the sun's surface with a lower temperature than its surroundings and intense magnetic activity..
Common synonyms include macula.
The opposite depends on the specific sense.
Use sun spot where its definition matches the intended context.
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