SEDNA

Pronunciation (US):

(GB):

 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)

Sense 1

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)

 Context examples 

A dim passing star such as a brown dwarf could also explain other anomalies at the fringes of our Solar System, such as the odd, wide orbit of the dwarf planet Sedna.

(Our Sun Could Have Been Born With an Evil Twin Called "Nemesis", The Titi Tudorancea Bulletin)