Share this entry

Sedna Syllabification: Sed·na
Pronunciation: /ˈsednə/

Entry from US English dictionary

Definition of Sedna in English:

Astronomy A reddish celestial body about half the size of earth’s moon. It is the most distant known object in the solar system and orbits the sun every 10,500 years.

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources