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2017 Word of the Year

eclipsing variable

noun, Astronomy.
1.
a variable star whose changes in brightness are caused by periodic eclipses of two stars in a binary system.
Also called eclipsing binary.
Origin of eclipsing variable
1920-1925
First recorded in 1920-25; eclipse + -ing2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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