crystalline heaven

variants: or crystalline sphere

Definition of crystalline heaven

: either of two transparent spheres imagined in the Ptolemaic system of astronomy to exist between the region of the fixed stars and the primum mobile in order to explain certain observed movements of the heavenly bodies

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 crystalline heaven

15th century, in the meaning defined above

Keep scrolling for more

Learn More about crystalline heaven

Time Traveler for crystalline heaven

Time Traveler

The first known use of crystalline heaven was in the 15th century

See more words from the same century

Statistics for crystalline heaven

Cite this Entry

“Crystalline heaven.” Dictionary, Merriam-Webster, Accessed 21 Sep. 2020.

Comments on crystalline heaven

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


Test Your Vocabulary

Homophone Quiz

  • three bears two of them look like theyre whispering to a third bear who looks chuffed to be the center of attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
Spell It

Can you spell these 10 commonly misspelled words?


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!