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Definition of Ursa Major noun from the Oxford Advanced Learner's Dictionary

Ursa Major

noun
 
/ˌɜːsə ˈmeɪdʒə(r)/
 
/ˌɜːrsə ˈmeɪdʒər/
(also the Great Bear)
[singular] (astronomy)
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  1. a large group of stars that can be clearly seen from the northern hemisphere
    Word OriginLatin, from the story in Greek mythology that the nymph Callisto was turned into a bear and placed as a constellation in the heavens by Zeus.
See Ursa Major in the Oxford Advanced American Dictionary

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