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

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