facula

Pronunciation key ( fak′yoo-lə )

fac•u•la

n.

[L., dim. of fax, facis, torch.]

1. Irregularly bright spot or streak on the outer surface of the sun.

[faculae (-lē′) plural of facula]

References and Further Reading

Webster's New World Dictionary of the American Language (College Edition) ©1955

Solar faculae explained