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2017 Word of the Year

flash spectrum

noun, Astronomy.
1.
the emission spectrum of the chromosphere of the sun, which dominates the solar spectrum in the seconds just before and after a total solar eclipse.
Origin of flash spectrum
1895-1900
First recorded in 1895-1900
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Word Value for flash

11
11
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