Mimas

noun
Mi·​mas | \ ˈmī-məs How to pronounce Mimas (audio) \

Definition of Mimas

astronomy
: the seventh largest satellite of Saturn with a diameter of approximately 250 miles (400 km) characterized by a single enormous crater The majestic saturnian rings, having beguiled astronomers for centuries, are targeted for intense study. Saturn's smaller satellites—such as Mimas, nicknamed the “Death Star,” and Iapetus, with its strange, organic-marked sur-face—will give up much of their secrets to Cassini.— Louis D. Friedman, The Planetary Report, March/April 1994

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 Mimas

1847, in the meaning defined above

Keep scrolling for more

Learn More About Mimas

Dictionary Entries Near Mimas

Mimamsa

Mimas

mimbar

See More Nearby Entries 

Statistics for Mimas

Cite this Entry

“Mimas.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Mimas. Accessed 20 Oct. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon
Seen & Heard
People are talking about

WORD OF THE DAY

Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

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