SEDNA
Dictionary entry overview: What does Sedna mean? • SEDNA (noun)
The noun SEDNA has 1 sense:
1. 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
Familiarity information: SEDNA used as a noun is very rare.
Dictionary entry details
• SEDNA (noun)
Meaning:
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
Classified under:
Nouns denoting natural objects (not man-made)
Instance hypernyms:
minor planet; planetoid (any of numerous small celestial bodies that move around the sun)
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