Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

EXAMPLES FROM THE WEB FOR 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."

MORE RELATED WORDS FOR FACULA

solar flare

nounsun surface eruption
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.