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Definition of Sedna
1. Noun. A planetoid of rock and ice about three-quarters the size of Pluto discovered in 2003; the most distant object known to orbit around the sun.
Definition of Sedna
1. Proper noun. An Inuit goddess of the sea ¹
2. Proper noun. A large trans-Neptunian object ¹
¹ Source: wiktionary.com