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Definition of Rigel
1. Noun. The brightest star in Orion. 
Definition of Rigel
1. n. A fixed star of the first magnitude in the left foot of the constellation Orion.
Medical Definition of Rigel
1. 
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1. Noun. The brightest star in Orion. 
1. n. A fixed star of the first magnitude in the left foot of the constellation Orion.
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