Betelgeuse |ˈbētlˌjoōs; ˈbetl-; -ˌjoōz| (also Betelgeux) Astronomy
the tenth brightest star in the sky, in the constellation Orion. It is a red supergiant, and variations in its brightness are associated with pulsations in its outer envelope.
ORIGIN French, alteration of Arabic yad al-jauzā ‘hand of the giant’ (the giant being Orion).
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