Facula [noun]

Definition of Facula:

sun surface eruption

Synonyms of Facula:


Opposite/Antonyms of Facula:

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Sentence/Example of Facula:

Facula, fak′ū-la, n. a spot brighter than the rest of the surface, sometimes seen on the sun's disc:—pl.

He considers it indeed "highly probable that the preparatory sign of a new spot is always a small, bright patch of facula."