Definition of Haumea

: a dwarf planet that orbits within the Kuiper belt with a mean distance from the sun of 43 astronomical units (6.45 billion kilometers) and a diameter of approximately 890 miles (1,430 kilometers) Like Pluto, the dwarf planet Haumea is one of the largest known Kuiper Belt objects that lie beyond the orbit of Neptune. It is thought to be the remnant of an even larger body, which fragmented as a result of a collision, leaving behind Haumea itself … and a cluster of smaller icy debris whose surface properties and orbits have been shown to match those of Haumea.Science, 24 Apr. 2009

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

First Known Use of Haumea

2009, in the meaning defined above

Keep scrolling for more

Learn More about Haumea

Time Traveler for Haumea

Time Traveler

The first known use of Haumea was in 2009

See more words from the same year

Statistics for Haumea

Cite this Entry

“Haumea.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/Haumea. Accessed 13 December 2019.

Comments on Haumea

What made you want to look up Haumea? Please tell us where you read or heard it (including the quote, if possible).


easily led, controlled, or managed

Get Word of the Day daily email!

Test Your Vocabulary

Great Scrabble Words—A Quiz

  • scrabble tiles that read scrabble quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!