Share this entry

Share this page

dwarf planet

Line breaks: dwarf planet

Definition of dwarf planet in English:

noun

Astronomy
A celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classed as such.
Example sentences
  • In 2006 Pluto was officially downgraded from planet to dwarf planet, causing much controversy in astronomical circles.
  • A paper in the journal Science has further relegated poor Pluto's status by proving that twin dwarf planet Eris is 27 per cent larger.
  • Ceres and Xena will also be considered dwarf planets.

Definition of dwarf planet in:

Share this entry

Share this page

 

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

Word of the day tenebrous
Pronunciation: ˈtɛnɪbrəs
adjective
dark; shadowy or obscure