What does "facula" mean?

A bright spot or patch between sunspots.

What is a synonym for "facula"?

Common synonyms include: blaze, bright patch, bright region, flame, flare, flash.

/ˈfækjʊlə/ noun

noun ·Rare ·Advanced level

Noun

1
A bright spot or patch between sunspots.
"Glaucous, hoar, enfouldered, cyathiform, / Making mere faculae of the sun and moon […]"
2
a large bright spot on the sun's photosphere occurring most frequently in the vicinity of sunspots wordnet
3
a bright spot on a planet wordnet

"Glaucous, hoar, enfouldered, cyathiform, / Making mere faculae of the sun and moon […]"

Borrowed from Latin facula (“little torch”).