cosmosphere

noun

cos·​mo·​sphere

ˈkäzmə+ˌ-

plural -s

1

: the material universe

2

: an apparatus for showing the position of the earth at any given time with respect to the fixed stars that consists of a hollow glass globe on which are depicted the stars and constellations and within which is a terrestrial globe

Word History

Etymology

cosm- + -sphere

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!