variable star(redirected from R corona borealis star)
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A star whose brightness varies because of internal changes, periodic eclipsing by a mutually orbiting star, or periodic transiting of orbiting planets or other circumstellar material.
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.
(Celestial Objects) any star that varies considerably in brightness, either irregularly or in regular periods. Intrinsic variables, in which the variation is a result of internal changes, include novae, supernovae, and pulsating stars. See also eclipsing binary
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a star that varies in brightness often in a regular period.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
A star whose brightness changes periodically. The variation can occur because of internal changes in a single star or because a darker star periodically eclipses a brighter star in a binary star system.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A star that varies in brightness because of internal changes or because it is periodically eclipsed by other bodies.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
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|Noun||1.||variable star - a star that varies noticeably in brightness|
star - (astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior
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