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Wolf-Rayet star

[woo lf-rahy-ey; French vawlf-ra-ye] /ˈwʊlf raɪˈeɪ; French vɔlf raˈyɛ/
noun
1.
a very hot (35,000–100,000 K) and luminous star in the early stages of evolution, with broad emission lines in its spectrum.
Also called W-R star.
Origin
1885-1890
1885-90; after French astronomers Charles J. E. Wolf (1827-1918) and Georges Rayet (1839-1906)
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for wolfrayet star

Wolf-Rayet star

/ˈwʊlfˈreɪət/
noun
1.
any of a small class of very hot intensely luminous stars surrounded by a rapidly expanding envelope of gas
Word Origin
C19: named after Charles Wolf (1827–1918) and Georges Rayet (1839–1906), French astronomers
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Encyclopedia Article for wolfrayet star

Wolf-Rayet star

any of a class of extremely hot, white stars having peculiar spectra thought to indicate either great turbulence within the star or a steady, voluminous ejection of material. A typical Wolf-Rayet star is several times the diameter of the Sun and thousands of times more luminous. Only a few hundred are known, located mostly in the spiral arms of the Milky Way Galaxy. The type was first distinguished in 1867 by the French astronomers Charles-Joseph-Etienne Wolf and Georges-Antoine-Pons Rayet.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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