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Related to facula: Facular
Memphis Facula (bottom right) on Jupiter's moon Ganymede, taken by
n. pl. fac·u·lae (-lē′)
Any of various large bright spots or veined patches on the surface of a planet or other solar system body, or on the sun's photosphere.
[Latin, small torch, diminutive of fax, fac-, torch.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
n, pl -lae (-ˌliː)
(Astronomy) any of the bright areas on the sun's surface, usually appearing just before a sunspot and subject to the same 11-year cycle
[C18: from Latin: little torch, from fax torch]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
fac•u•la(ˈfæk yə lə)
n., pl. -lae (-ˌli)
an irregular and unusually bright patch on the sun's surface.
[1700–10; < Latin: torch]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
A large bright spot that appears on the photosphere of the Sun.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
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|Noun||1.||facula - a bright spot on a planet|
|2.||facula - a large bright spot on the sun's photosphere occurring most frequently in the vicinity of sunspots|
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