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Definition of Canopus
1. Noun. Supergiant star 650 light years from Earth; second brightest star in the sky. 
Definition of Canopus
1. n. A star of the first magnitude in the southern constellation Argo.
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1. Noun. Supergiant star 650 light years from Earth; second brightest star in the sky. 
1. n. A star of the first magnitude in the southern constellation Argo.